using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Database { public class User { public int Id; public string name; public string email; public DateTime birthday; } public class Type { public int Id; public string title; } public class Data { public int Id; public DateTime dateTime; public int userId; public int typeId; } public class Description { public int Id; public string title; public string descript; public string place; } public class Invited { public int userId; public int typeId; } }