diff --git a/Ecommerce.API.davetn657/Controllers/CategoriesController.cs b/Ecommerce.API.davetn657/Controllers/CategoriesController.cs
new file mode 100644
index 00000000..1aa15da1
--- /dev/null
+++ b/Ecommerce.API.davetn657/Controllers/CategoriesController.cs
@@ -0,0 +1,48 @@
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Data.Dtos;
+using Ecommerce.API.davetn657.Services;
+using Ecommerce.API.davetn657.Models;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Ecommerce.API.davetn657.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class CategoriesController : ControllerBase
+{
+    private readonly ICategoryService _categoryService;
+
+    public CategoriesController(ICategoryService categoryServices)
+    {
+        _categoryService = categoryServices;
+    }
+
+    [HttpGet]
+    public ActionResult<PagedResponse<CategoriesDto>> AllCategories()
+    {
+        return Ok(_categoryService.AllCategories(new PaginationParams()));
+    }
+    [HttpGet("id/{id}")]
+    public ActionResult<CategoriesDto> CategoryById(int id)
+    {
+        var result = _categoryService.CategoryById(id);
+
+        if (result == null) return NotFound();
+
+        return Ok(result);
+    }
+    [HttpPost]
+    public ActionResult<CategoriesDto> CreateCategory(CategoriesDto category)
+    {
+        return Ok(_categoryService.CreateCategory(category));
+    }
+    [HttpDelete("{id}")]
+    public ActionResult<string> DeleteCategory(int id)
+    {
+        var result = _categoryService.DeleteCategory(id);
+
+        if (result == null) return NotFound();
+
+        return Ok(result);
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Controllers/ProductsController.cs b/Ecommerce.API.davetn657/Controllers/ProductsController.cs
new file mode 100644
index 00000000..c9458d20
--- /dev/null
+++ b/Ecommerce.API.davetn657/Controllers/ProductsController.cs
@@ -0,0 +1,41 @@
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Data.Dtos;
+using Ecommerce.API.davetn657.Services;
+using Ecommerce.API.davetn657.Models;
+using Microsoft.AspNetCore.Mvc;
+
+
+namespace Ecommerce.API.davetn657.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class ProductsController : ControllerBase
+{
+    private readonly IProductService _productService;
+
+    public ProductsController(IProductService productService)
+    {
+        _productService = productService;
+    }
+    [HttpGet]
+    public ActionResult<PagedResponse<ProductsDto>> AllProducts()
+    {
+        return Ok(_productService.AllProducts(new PaginationParams()));
+    }
+    [HttpGet("category/{category}")]
+    public ActionResult<PagedResponse<ProductsDto>> ProductsByCategory(string category)
+    {
+        return Ok(_productService.ProductsByCategory( category, new PaginationParams()));
+    }
+    [HttpGet("id/{id}")]
+    public ActionResult<ProductsDto> ProductById(int id)
+    {
+        return Ok(_productService.ProductById(id));
+    }
+    [HttpPost]
+    public ActionResult<ProductsDto> CreateProduct(ProductsDto product)
+    {
+        return Ok(_productService.CreateProduct(product));
+    }
+
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Controllers/SalesController.cs b/Ecommerce.API.davetn657/Controllers/SalesController.cs
new file mode 100644
index 00000000..dd607af4
--- /dev/null
+++ b/Ecommerce.API.davetn657/Controllers/SalesController.cs
@@ -0,0 +1,35 @@
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Data.Dtos;
+using Ecommerce.API.davetn657.Models;
+using Ecommerce.API.davetn657.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Ecommerce.API.davetn657.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class SalesController : ControllerBase
+{
+    private readonly ISaleService _saleService;
+
+    public SalesController(ISaleService saleService)
+    {
+        _saleService = saleService;
+    }
+
+    [HttpGet]
+    public ActionResult<PagedResponse<Sale>> AllSales()
+    {
+        return Ok(_saleService.AllSales(new PaginationParams()));
+    }
+    [HttpGet("id/{id}")]
+    public ActionResult<Sale> SaleById(int id)
+    {
+        return Ok(_saleService.SaleById(id));
+    }
+    [HttpPost]
+    public ActionResult<SalesResponseDto> CreateSale(CreateSalesDto sale)
+    {
+        return Ok(_saleService.CreateSale(sale));
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/Categories.cs b/Ecommerce.API.davetn657/Data/Categories.cs
new file mode 100644
index 00000000..4164f712
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Categories.cs
@@ -0,0 +1,8 @@
+namespace Ecommerce.API.davetn657.Data;
+
+public class Category
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public DateTime CreateDate { get; set; }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/DatabaseContext.cs b/Ecommerce.API.davetn657/Data/DatabaseContext.cs
new file mode 100644
index 00000000..2195bef1
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/DatabaseContext.cs
@@ -0,0 +1,15 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace Ecommerce.API.davetn657.Data;
+
+public class DatabaseContext : DbContext
+{
+    public DatabaseContext(DbContextOptions options) : base(options)
+    {
+
+    }
+
+    public DbSet<Category> Categories { get; set; }
+    public DbSet<Product> Products { get; set; }
+    public DbSet<Sale> Sales { get; set; }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/Dtos/CategoriesDto.cs b/Ecommerce.API.davetn657/Data/Dtos/CategoriesDto.cs
new file mode 100644
index 00000000..41d9101a
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Dtos/CategoriesDto.cs
@@ -0,0 +1,7 @@
+namespace Ecommerce.API.davetn657.Data.Dtos;
+
+public class CategoriesDto
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/Dtos/ProductsDto.cs b/Ecommerce.API.davetn657/Data/Dtos/ProductsDto.cs
new file mode 100644
index 00000000..61a57f1a
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Dtos/ProductsDto.cs
@@ -0,0 +1,18 @@
+namespace Ecommerce.API.davetn657.Data.Dtos;
+
+public class ProductsDto
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public decimal Price { get; set; }
+    public string Category { get; set; } = string.Empty;
+    public List<SalesDto> Sales { get; set; } = [];
+}
+
+public class ProductsSalesDto
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public decimal Price { get; set; }
+    public string Category { get; set; } = string.Empty;
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/Dtos/SalesDto.cs b/Ecommerce.API.davetn657/Data/Dtos/SalesDto.cs
new file mode 100644
index 00000000..cd22505c
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Dtos/SalesDto.cs
@@ -0,0 +1,20 @@
+namespace Ecommerce.API.davetn657.Data.Dtos;
+
+public class SalesDto
+{
+    public int Id { get; set; }
+    public List<int> ProductIds { get; set; } = [];
+    public decimal Total { get; set; }
+}
+
+public class CreateSalesDto
+{
+    public List<int> ProductIds { get; set; } = [];
+}
+
+public class SalesResponseDto
+{
+    public int Id { get; set; }
+    public decimal Total { get; set; }
+    public List<ProductsSalesDto> Products { get; set; } = [];
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/Migrations/20260320171417_InitialCreate.Designer.cs b/Ecommerce.API.davetn657/Data/Migrations/20260320171417_InitialCreate.Designer.cs
new file mode 100644
index 00000000..fb325c28
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Migrations/20260320171417_InitialCreate.Designer.cs
@@ -0,0 +1,109 @@
+// <auto-generated />
+using System;
+using Ecommerce.API.davetn657.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace Ecommerce.API.davetn657.Data.Migrations
+{
+    [DbContext(typeof(DatabaseContext))]
+    [Migration("20260320171417_InitialCreate")]
+    partial class InitialCreate
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "10.0.5");
+
+            modelBuilder.Entity("Ecommerce.API.davetn657.Data.Category", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreateDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Categories");
+                });
+
+            modelBuilder.Entity("Ecommerce.API.davetn657.Data.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Category")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("Price")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("Ecommerce.API.davetn657.Data.Sale", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<decimal>("Total")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Sales");
+                });
+
+            modelBuilder.Entity("ProductSale", b =>
+                {
+                    b.Property<int>("ProductsId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("SalesId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("ProductsId", "SalesId");
+
+                    b.HasIndex("SalesId");
+
+                    b.ToTable("ProductSale");
+                });
+
+            modelBuilder.Entity("ProductSale", b =>
+                {
+                    b.HasOne("Ecommerce.API.davetn657.Data.Product", null)
+                        .WithMany()
+                        .HasForeignKey("ProductsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Ecommerce.API.davetn657.Data.Sale", null)
+                        .WithMany()
+                        .HasForeignKey("SalesId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/Ecommerce.API.davetn657/Data/Migrations/20260320171417_InitialCreate.cs b/Ecommerce.API.davetn657/Data/Migrations/20260320171417_InitialCreate.cs
new file mode 100644
index 00000000..0475ece9
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Migrations/20260320171417_InitialCreate.cs
@@ -0,0 +1,102 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Ecommerce.API.davetn657.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Categories",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    CreateDate = table.Column<DateTime>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Categories", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Products",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    Price = table.Column<decimal>(type: "TEXT", nullable: false),
+                    Category = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Products", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Sales",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Total = table.Column<decimal>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Sales", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ProductSale",
+                columns: table => new
+                {
+                    ProductsId = table.Column<int>(type: "INTEGER", nullable: false),
+                    SalesId = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ProductSale", x => new { x.ProductsId, x.SalesId });
+                    table.ForeignKey(
+                        name: "FK_ProductSale_Products_ProductsId",
+                        column: x => x.ProductsId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ProductSale_Sales_SalesId",
+                        column: x => x.SalesId,
+                        principalTable: "Sales",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ProductSale_SalesId",
+                table: "ProductSale",
+                column: "SalesId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Categories");
+
+            migrationBuilder.DropTable(
+                name: "ProductSale");
+
+            migrationBuilder.DropTable(
+                name: "Products");
+
+            migrationBuilder.DropTable(
+                name: "Sales");
+        }
+    }
+}
diff --git a/Ecommerce.API.davetn657/Data/Migrations/DatabaseContextModelSnapshot.cs b/Ecommerce.API.davetn657/Data/Migrations/DatabaseContextModelSnapshot.cs
new file mode 100644
index 00000000..bd2b543b
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Migrations/DatabaseContextModelSnapshot.cs
@@ -0,0 +1,106 @@
+// <auto-generated />
+using System;
+using Ecommerce.API.davetn657.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace Ecommerce.API.davetn657.Data.Migrations
+{
+    [DbContext(typeof(DatabaseContext))]
+    partial class DatabaseContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "10.0.5");
+
+            modelBuilder.Entity("Ecommerce.API.davetn657.Data.Category", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreateDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Categories");
+                });
+
+            modelBuilder.Entity("Ecommerce.API.davetn657.Data.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Category")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("Price")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("Ecommerce.API.davetn657.Data.Sale", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<decimal>("Total")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Sales");
+                });
+
+            modelBuilder.Entity("ProductSale", b =>
+                {
+                    b.Property<int>("ProductsId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("SalesId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("ProductsId", "SalesId");
+
+                    b.HasIndex("SalesId");
+
+                    b.ToTable("ProductSale");
+                });
+
+            modelBuilder.Entity("ProductSale", b =>
+                {
+                    b.HasOne("Ecommerce.API.davetn657.Data.Product", null)
+                        .WithMany()
+                        .HasForeignKey("ProductsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Ecommerce.API.davetn657.Data.Sale", null)
+                        .WithMany()
+                        .HasForeignKey("SalesId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/Ecommerce.API.davetn657/Data/Products.cs b/Ecommerce.API.davetn657/Data/Products.cs
new file mode 100644
index 00000000..f469e2d6
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Products.cs
@@ -0,0 +1,9 @@
+namespace Ecommerce.API.davetn657.Data;
+public class Product
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public decimal Price { get; set; }
+    public List<Sale> Sales { get; set; } = [];
+    public string Category { get; set; } = string.Empty;
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Data/Sales.cs b/Ecommerce.API.davetn657/Data/Sales.cs
new file mode 100644
index 00000000..03e27daf
--- /dev/null
+++ b/Ecommerce.API.davetn657/Data/Sales.cs
@@ -0,0 +1,8 @@
+namespace Ecommerce.API.davetn657.Data;
+
+public class Sale
+{
+    public int Id { get; set; }
+    public decimal Total { get; set; }
+    public List<Product> Products { get; set; } = [];
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Ecommerce.API.davetn657.csproj b/Ecommerce.API.davetn657/Ecommerce.API.davetn657.csproj
new file mode 100644
index 00000000..f4befeb6
--- /dev/null
+++ b/Ecommerce.API.davetn657/Ecommerce.API.davetn657.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="10.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+</Project>
diff --git a/Ecommerce.API.davetn657/Ecommerce.API.davetn657.http b/Ecommerce.API.davetn657/Ecommerce.API.davetn657.http
new file mode 100644
index 00000000..da8b7c7a
--- /dev/null
+++ b/Ecommerce.API.davetn657/Ecommerce.API.davetn657.http
@@ -0,0 +1,6 @@
+@Ecommerce.API.davetn657_HostAddress = http://localhost:5096
+
+GET {{Ecommerce.API.davetn657_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###
diff --git a/Ecommerce.API.davetn657/Ecommerce.API.davetn657.slnx b/Ecommerce.API.davetn657/Ecommerce.API.davetn657.slnx
new file mode 100644
index 00000000..4b7c664e
--- /dev/null
+++ b/Ecommerce.API.davetn657/Ecommerce.API.davetn657.slnx
@@ -0,0 +1,3 @@
+<Solution>
+  <Project Path="Ecommerce.API.davetn657.csproj" />
+</Solution>
diff --git a/Ecommerce.API.davetn657/Ecommerce.db b/Ecommerce.API.davetn657/Ecommerce.db
new file mode 100644
index 00000000..47ec0ff0
Binary files /dev/null and b/Ecommerce.API.davetn657/Ecommerce.db differ
diff --git a/Ecommerce.API.davetn657/Ecommerce.db-shm b/Ecommerce.API.davetn657/Ecommerce.db-shm
new file mode 100644
index 00000000..46bbeb21
Binary files /dev/null and b/Ecommerce.API.davetn657/Ecommerce.db-shm differ
diff --git a/Ecommerce.API.davetn657/Ecommerce.db-wal b/Ecommerce.API.davetn657/Ecommerce.db-wal
new file mode 100644
index 00000000..a7249d31
Binary files /dev/null and b/Ecommerce.API.davetn657/Ecommerce.db-wal differ
diff --git a/Ecommerce.API.davetn657/Models/PagedResponse.cs b/Ecommerce.API.davetn657/Models/PagedResponse.cs
new file mode 100644
index 00000000..dfbaaaec
--- /dev/null
+++ b/Ecommerce.API.davetn657/Models/PagedResponse.cs
@@ -0,0 +1,17 @@
+namespace Ecommerce.API.davetn657.Models;
+
+public class PagedResponse<T>
+{
+    public List<T> Data { get; set; } = [];
+    public int PageNumber { get; set; }
+    public int PageSize { get; set; }
+    public int TotalRecords { get; set; }
+
+    public PagedResponse(List<T> data, int pageNumber, int pageSize, int totalRecords)
+    {
+        Data = data;
+        PageNumber = pageNumber;
+        PageSize = pageSize;
+        TotalRecords = totalRecords;
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Models/PaginationParams.cs b/Ecommerce.API.davetn657/Models/PaginationParams.cs
new file mode 100644
index 00000000..d8a2989d
--- /dev/null
+++ b/Ecommerce.API.davetn657/Models/PaginationParams.cs
@@ -0,0 +1,14 @@
+namespace Ecommerce.API.davetn657.Models;
+
+public class PaginationParams
+{
+    private const int _maxPageSize = 50;
+    public int PageNumber { get; set; } = 1;
+    private int _pageSize = 10;
+
+    public int PageSize
+    {
+        get => _pageSize;
+        set => _pageSize = (value > _maxPageSize) ? _maxPageSize : value;
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Program.cs b/Ecommerce.API.davetn657/Program.cs
new file mode 100644
index 00000000..bfd9860d
--- /dev/null
+++ b/Ecommerce.API.davetn657/Program.cs
@@ -0,0 +1,33 @@
+using Microsoft.EntityFrameworkCore;
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Services;
+
+namespace Ecommerce.API.davetn657;
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+
+        builder.Services.AddAuthorization();
+        builder.Services.AddOpenApi();
+        builder.Services.AddControllers();
+
+        builder.Services.AddDbContext<DatabaseContext>(opt => opt.UseSqlite(builder.Configuration.GetConnectionString("DefaultConnection")));
+        builder.Services.AddScoped<ICategoryService, CategoryService>();
+        builder.Services.AddScoped<IProductService, ProductService>();
+        builder.Services.AddScoped<ISaleService, SaleService>();
+
+        var app = builder.Build();
+
+        if (app.Environment.IsDevelopment())
+        {
+            app.MapOpenApi();
+        }
+
+        app.MapControllers();
+
+        app.Run();
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Properties/launchSettings.json b/Ecommerce.API.davetn657/Properties/launchSettings.json
new file mode 100644
index 00000000..5336d038
--- /dev/null
+++ b/Ecommerce.API.davetn657/Properties/launchSettings.json
@@ -0,0 +1,22 @@
+{
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "http://localhost:5096"
+    },
+    "https": {
+      "commandName": "Project",
+      "workingDirectory": "C:\\Users\\davei\\Documents\\.Coding\\.C#Academy\\.Backup\\Ecommerce.API.davetn657\\Ecommerce.API.davetn657",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "https://localhost:7265;http://localhost:5096"
+    }
+  },
+  "$schema": "https://json.schemastore.org/launchsettings.json"
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Services/CategoryService.cs b/Ecommerce.API.davetn657/Services/CategoryService.cs
new file mode 100644
index 00000000..d94ab70f
--- /dev/null
+++ b/Ecommerce.API.davetn657/Services/CategoryService.cs
@@ -0,0 +1,82 @@
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Data.Dtos;
+using Ecommerce.API.davetn657.Models;
+
+namespace Ecommerce.API.davetn657.Services;
+
+public interface ICategoryService
+{
+    public PagedResponse<CategoriesDto> AllCategories(PaginationParams pagination);
+    public CategoriesDto? CategoryById(int id);
+    public CategoriesDto CreateCategory(CategoriesDto category);
+    public string? DeleteCategory(int id);
+}
+
+public class CategoryService : ICategoryService
+{
+    private readonly DatabaseContext _dbContext;
+
+    public CategoryService(DatabaseContext dbContext)
+    {
+        _dbContext = dbContext;
+    }
+
+    public PagedResponse<CategoriesDto> AllCategories(PaginationParams pagination)
+    {
+        var query = _dbContext.Categories.AsQueryable();
+        var totalRecords = query.Count();
+        var categories = query
+            .Skip((pagination.PageNumber - 1) * pagination.PageSize)
+            .Take(pagination.PageSize)
+            .Select(c => new CategoriesDto
+            {
+                Id = c.Id,
+                Name = c.Name
+            }).ToList()
+            .ToList();
+
+        var pagedResponse = new PagedResponse<CategoriesDto>(categories, pagination.PageNumber, pagination.PageSize, totalRecords);
+
+        return pagedResponse;
+    }
+    public CategoriesDto? CategoryById(int id)
+    {
+        var savedCategory = _dbContext.Categories
+            .Where(c => c.Id == id)
+            .Select(c => new CategoriesDto
+            {
+                Id = c.Id,
+                Name = c.Name
+            }).FirstOrDefault();
+
+        if (savedCategory == null) return null;
+        return savedCategory;
+    }
+    public CategoriesDto CreateCategory(CategoriesDto category)
+    {
+        var savedCategory = new Category
+        {
+            Id = category.Id,
+            Name = category.Name
+        };
+            
+        _dbContext.Categories.Add(savedCategory);
+        _dbContext.SaveChanges();
+
+        return new CategoriesDto
+        {
+            Id = savedCategory.Id,
+            Name = savedCategory.Name
+        };
+    }
+    public string? DeleteCategory(int id)
+    {
+        var savedCategory = _dbContext.Categories.Find(id);
+        if (savedCategory == null) return null;
+
+        _dbContext.Categories.Remove(savedCategory);
+        _dbContext.SaveChanges();
+
+        return $"Successfully deleted category with id {savedCategory.Id}";
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Services/ProductService.cs b/Ecommerce.API.davetn657/Services/ProductService.cs
new file mode 100644
index 00000000..ce6e0c02
--- /dev/null
+++ b/Ecommerce.API.davetn657/Services/ProductService.cs
@@ -0,0 +1,119 @@
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Data.Dtos;
+using Ecommerce.API.davetn657.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace Ecommerce.API.davetn657.Services;
+
+public interface IProductService
+{
+    /*
+     CreateProduct
+    ViewAllProducts
+    ViewProductById
+    ViewProductByCategory
+     */
+
+    public PagedResponse<ProductsDto> AllProducts(PaginationParams pagination);
+    public PagedResponse<ProductsDto> ProductsByCategory(string category, PaginationParams pagination);
+    public ProductsDto? ProductById(int id);
+    public ProductsDto CreateProduct(ProductsDto product);
+}
+
+public class ProductService : IProductService
+{
+    private readonly DatabaseContext _dbContext;
+    public ProductService(DatabaseContext dbContext)
+    {
+        _dbContext = dbContext;
+    }
+
+    public PagedResponse<ProductsDto> AllProducts(PaginationParams pagination)
+    {
+        var query = _dbContext.Products.AsQueryable();
+        var totalRecords = query.Count();
+        var products = query
+            .Skip((pagination.PageNumber - 1) * pagination.PageSize)
+            .Take(pagination.PageSize)
+            .Select(p => new ProductsDto
+            {
+                Id = p.Id,
+                Name = p.Name,
+                Price = p.Price,
+                Category = p.Category,
+                Sales = p.Sales.Select(s => new SalesDto
+                {
+                    Id = s.Id,
+                    Total = s.Total,
+                    ProductIds = s.Products.Select(p => p.Id).ToList()
+                }).ToList()
+            }).ToList();
+
+        var pagedResponse = new PagedResponse<ProductsDto>(products, pagination.PageNumber, pagination.PageSize, totalRecords);
+
+        return pagedResponse;
+    }
+    public PagedResponse<ProductsDto> ProductsByCategory(string category, PaginationParams pagination)
+    {
+        var query = _dbContext.Products.Where(p => p.Category.ToLower() == category.ToLower());
+        var totalRecords = query.Count();
+        var products = query
+            .Skip((pagination.PageNumber - 1) * pagination.PageSize)
+            .Take(pagination.PageSize)
+            .Select(p => new ProductsDto
+            {
+                Id = p.Id,
+                Name = p.Name,
+                Price = p.Price,
+                Category = p.Category,
+                Sales = p.Sales.Select(s => new SalesDto
+                {
+                    Id = s.Id,
+                    Total = s.Total,
+                    ProductIds = s.Products.Select(p => p.Id).ToList()
+                }).ToList()
+            }).ToList();
+
+        var pagedResponse = new PagedResponse<ProductsDto>(products, pagination.PageNumber, pagination.PageSize, totalRecords);
+
+        return pagedResponse;
+    }
+    public ProductsDto? ProductById(int id)
+    {
+        return _dbContext.Products
+        .Where(p => p.Id == id)
+        .Select(p => new ProductsDto
+        {
+            Id = p.Id,
+            Name = p.Name,
+            Price = p.Price,
+            Category = p.Category,
+            Sales = p.Sales.Select(s => new SalesDto
+            {
+                Id = s.Id,
+                Total = s.Total,
+                ProductIds = s.Products.Select(p => p.Id).ToList()
+            }).ToList()
+        }).FirstOrDefault();
+    }
+    public ProductsDto CreateProduct(ProductsDto product)
+    {
+        var savedProduct = new Product
+        {
+            Id = product.Id,
+            Name = product.Name,
+            Price = product.Price,
+            Category = product.Category
+        };
+
+        _dbContext.Products.Add(savedProduct);
+        _dbContext.SaveChanges();
+        return new ProductsDto
+        {
+            Id = product.Id,
+            Name = product.Name,
+            Price = product.Price,
+            Category = product.Category
+        };
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/Services/SaleService.cs b/Ecommerce.API.davetn657/Services/SaleService.cs
new file mode 100644
index 00000000..9e0f276c
--- /dev/null
+++ b/Ecommerce.API.davetn657/Services/SaleService.cs
@@ -0,0 +1,102 @@
+using Ecommerce.API.davetn657.Data;
+using Ecommerce.API.davetn657.Data.Dtos;
+using Ecommerce.API.davetn657.Models;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace Ecommerce.API.davetn657.Services;
+
+public interface ISaleService
+{
+    /*
+     * View All Sales
+     * View Sale By ID
+     * Create New Sale
+     */
+    public PagedResponse<SalesResponseDto> AllSales(PaginationParams pagination);
+    public SalesResponseDto? SaleById(int id);
+    public SalesResponseDto CreateSale(CreateSalesDto sale);
+}
+
+public class SaleService : ISaleService
+{
+    private readonly DatabaseContext _dbContext;
+    public SaleService(DatabaseContext dbContext)
+    {
+        _dbContext = dbContext;
+    }
+
+    public PagedResponse<SalesResponseDto> AllSales([FromQuery] PaginationParams pagination)
+    {
+        var query = _dbContext.Sales.AsQueryable();
+        var totalRecords = query.Count();
+        var sales = query
+            .Skip((pagination.PageNumber - 1) * pagination.PageSize)
+            .Take(pagination.PageSize)
+            .Select(s => new SalesResponseDto
+            {
+                Id = s.Id,
+                Total = s.Total,
+                Products = s.Products.Select(p => new ProductsSalesDto
+                {
+                    Name = p.Name,
+                    Id = p.Id,
+                    Price = p.Price,
+                    Category = p.Category
+                }).ToList()
+
+            }).ToList();
+
+        var pagedResponse = new PagedResponse<SalesResponseDto>(sales, pagination.PageNumber, pagination.PageSize, totalRecords);
+
+        return pagedResponse;
+    }
+    public SalesResponseDto? SaleById(int id)
+    {
+        return _dbContext.Sales
+            .Where(s => s.Id == id)
+            .Select(s => new SalesResponseDto
+            {
+                Id = s.Id,
+                Total = s.Total,
+                Products = s.Products.Select(p => new ProductsSalesDto
+                {
+                    Id = p.Id,
+                    Price = p.Price,
+                    Category = p.Category
+                }).ToList()
+            }).FirstOrDefault();
+    }
+    public SalesResponseDto CreateSale(CreateSalesDto sale)
+    {
+        var products = _dbContext.Products
+            .Where(s => sale.ProductIds.Contains(s.Id))
+            .ToList();
+
+        if(products.Count != sale.ProductIds.Count)
+        {
+            throw new Exception("Could not find one or more products");
+        }
+
+        var savedSale = new Sale
+        {
+            Products = products,
+            Total = products.Sum(s => s.Price)
+        };
+
+        _dbContext.Sales.Add(savedSale);
+        _dbContext.SaveChanges();
+
+        return new SalesResponseDto
+        {
+            Id = savedSale.Id,
+            Total = savedSale.Total,
+            Products = savedSale.Products.Select(p => new ProductsSalesDto
+            {
+                Id = p.Id,
+                Price = p.Price,
+                Category = p.Category
+            }).ToList()
+        };
+    }
+}
\ No newline at end of file
diff --git a/Ecommerce.API.davetn657/appsettings.Development.json b/Ecommerce.API.davetn657/appsettings.Development.json
new file mode 100644
index 00000000..0c208ae9
--- /dev/null
+++ b/Ecommerce.API.davetn657/appsettings.Development.json
@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}
diff --git a/Ecommerce.API.davetn657/appsettings.json b/Ecommerce.API.davetn657/appsettings.json
new file mode 100644
index 00000000..dc74f6ca
--- /dev/null
+++ b/Ecommerce.API.davetn657/appsettings.json
@@ -0,0 +1,12 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "ConnectionStrings": {
+    "DefaultConnection": "Data Source=Ecommerce.db"
+  },
+  "AllowedHosts": "*"
+}
diff --git a/EcommerceAPI.postman_collection.json b/EcommerceAPI.postman_collection.json
new file mode 100644
index 00000000..d8e6c30d
--- /dev/null
+++ b/EcommerceAPI.postman_collection.json
@@ -0,0 +1,320 @@
+{
+  "info": {
+    "_postman_id": "0c411631-dbc1-441e-95d7-36174ff7de70",
+    "name": "EcommerceAPI",
+    "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
+    "_exporter_id": "53190867",
+    "_collection_link": "https://go.postman.co/collection/53190867-0c411631-dbc1-441e-95d7-36174ff7de70?source=collection_link"
+  },
+  "item": [
+    {
+      "name": "Categories Post",
+      "request": {
+        "method": "POST",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Name\":\"Socks\"\r\n}",
+          "options": {
+            "raw": {
+              "language": "json"
+            }
+          }
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Categories",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Categories"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get All Categories",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Categories",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Categories"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get Category By Id",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Categories/id/1",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Categories",
+            "id",
+            "1"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Delete Category",
+      "request": {
+        "method": "DELETE",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Categories/1",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Categories",
+            "1"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Products Post",
+      "request": {
+        "method": "POST",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}",
+          "options": {
+            "raw": {
+              "language": "json"
+            }
+          }
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Products",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Products"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get All Products",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Products",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Products"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get Product By Category",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Products/category/shirts",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Products",
+            "category",
+            "shirts"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get Product By Id",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Price\": 18.99,\r\n    \"Category\": \"Pants\"\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Products/id/1",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Products",
+            "id",
+            "1"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Sales Post",
+      "request": {
+        "method": "POST",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Products\":[1,6]\r\n}",
+          "options": {
+            "raw": {
+              "language": "json"
+            }
+          }
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Sales",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Sales"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get All Sales",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Products\":[\r\n        {\"id\":7, \"Price\":20.99, \"Category\":\"Shirts\"},\r\n        {\"id\":8, \"Price\": 12.99, \"Category\": \"Pants\"}\r\n    ]\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Sales",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Sales"
+          ]
+        }
+      },
+      "response": []
+    },
+    {
+      "name": "Get Sale By Id",
+      "protocolProfileBehavior": {
+        "disableBodyPruning": true
+      },
+      "request": {
+        "method": "GET",
+        "header": [],
+        "body": {
+          "mode": "raw",
+          "raw": "{\r\n    \"Products\":[\r\n        {\"id\":7, \"Price\":20.99, \"Category\":\"Shirts\"},\r\n        {\"id\":8, \"Price\": 12.99, \"Category\": \"Pants\"}\r\n    ]\r\n}"
+        },
+        "url": {
+          "raw": "https://localhost:7265/api/Sales/id/1",
+          "protocol": "https",
+          "host": [
+            "localhost"
+          ],
+          "port": "7265",
+          "path": [
+            "api",
+            "Sales",
+            "id",
+            "1"
+          ]
+        }
+      },
+      "response": []
+    }
+  ]
+}
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 00000000..233e104a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,29 @@
+# Ecommerce.API.davetn657
+
+## Overview
+
+A WebAPI for an ecommerce that stores and sends product, sales, and categories data
+
+Made for C# Academey Project based Learning
+
+## Requirements
+
+- Must use ASP.NET Core Web API and EF core
+- API need to use Dependency Injection
+- Should have atleast three tables (products, sales, categories)
+- Products must have a price
+- Multiple products can be used in the same sale
+- Products and sales get endpoints must have pagination capability
+
+## Technologies
+
+- C#
+- Entity Framework Core
+- Sqlite
+
+## Looking back
+
+- I feel I am getting more familiar with building projects, planning and actually building them out has gotten significantly easier even with more complex projects
+- For this project the only thing I struggled with was the many-to-many relationship between Sales and Products. It was difficult to understand how to implement it as I kept getting cyclical errors whenever I used either GET methods. I found that using Dtos to manage what data is being input/output fixed this for me.
+- I was able to build out most of the API without needing to look back at documents and past project.
+- This was my first time using pagination and it was mostly copying from the learning resource, but I did need to modify it a little to fit better into my codebase which helped me understand the process.