using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace firstCodeFirstApp
{
 public class Donator
 {
 public int DonatorId { get; set; }
 public string Name { get; set; }
 public decimal Amount { get; set; }
 public DateTime DonateDate { get; set; }
 public virtual ICollection<PayWay> PayWays { get; set; }

 public int? DonatorTypeId { get; set; }
 public virtual DonatorType DonatorType { get; set; }

 public Donator()
 {
 PayWays = new HashSet<PayWay>();
 }
 }

 public class DonatorType
 {
 public int Id { get; set; }
 public string Name { get; set; }

 public virtual ICollection<Donator> Donators { get; set; }

 }

 [Table("PayWay")]
 public class PayWay
 {


 public int Id { get; set; }

 [MaxLength(8, ErrorMessage = "支付方式的名称长度不能大于8")]
 public string Name { get; set; }

 [Column("DonatorId")]
 public int DonatorId { get; set; }

 }

 public class Person
 {

 public Person()
 {
 Companies = new HashSet<Company>();
 }

 public int PersonId { get; set; }
 public string Name { get; set; }
 public bool IsActive { get; set; }
 public virtual Student Student { get; set; }
 public virtual ICollection<Company> Companies { get; set; }

 }

 public class Student
 {
 public int PersonId { get; set; }
 public virtual Person Person { get; set; }
 public string CollegeName { get; set; }
 public DateTime EnrollmentDate { get; set; }


 }

 public class Company
 {
 public Company()
 {
 Persons = new HashSet<Person>();
 }

 public int CompanyId { get; set; }
 public string CompanyName { get; set; }
 public virtual ICollection<Person> Persons { get; set; }
 }


 



}