10.3 Defining EF Core models -> Building an EF Core modal for the Northwinid tables

Chapter10/WorkingWithEFCore/WorkingWithEFCore/Category.cs

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+using System.ComponentModel.DataAnnotations.Schema; // [Column]
+
+namespace Packt.Shared;
+public class Category
+{
+    // these properties map to columns in the database
+    public int CategoryId { get; set; }
+    public string? CategoryName { get; set; }
+    [Column(TypeName = "ntext")]
+    public string? Description { get; set; }
+    // defines a navigation property for related rows (one to many relationship with Products)
+    public virtual ICollection<Product> Products { get; set; }
+
+    public Category()
+    {
+        // to enable developers to add products to a Category we must
+        // initialize the navigation property to an empty collection
+        Products = new HashSet<Product>();
+    }
+}

Chapter10/WorkingWithEFCore/WorkingWithEFCore/Product.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Packt.Shared;
+
+public class Product
+{
+    public int ProductId { get; set; }
+    [Required] [StringLength(40)] public string ProductName { get; set; } = null!;
+    [Column("UnitPrice", TypeName = "money")]
+    public decimal? Cost { get; set; }
+    [Column("UnitsInStock")]
+    public short? Stock { get; set; }
+    public bool Discontinued { get; set; }
+    // these two define the foreign key relationship
+    // to the Categories table
+    public int CategoryId { get; set; }
+    public virtual Category Category { get; set; } = null;
+}