Creating all entities for subject 2

PyroFetes/Models/PurchaseProduct.cs

@@ -0,0 +1,16 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ProductId), nameof(PurchaseOrderId))]
+public class PurchaseProduct
+{
+    public Product? Product { get; set; }
+    [Required] public int ProductId { get; set; }
+
+    public PurchaseOrder? PurchaseOrder { get; set; }
+    [Required] public int PurchaseOrderId { get; set; }
+
+    [Required] public int Quantity { get; set; }
+}