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 public virtual ICollection 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(); } }