How to have multiple one-to-many relations between two entities using Entity Framework Code First

Question

Below is a simple approach to save relational database records which is working perfectly fine. I have doubt on one scenario. Before that i need to know the way i am approaching

Answer 1

namespace MvcApplication4.Models
{
 [Table("tb_book")]
public class Book
{
    [Key]
    public int ID { get; set; }
    public string Title { get; set; }

    [InverseProperty("Books")]
    public Author Author { get; set; }
}
[Table("tb_author")]
public class Author
{
    [Key]
    public int ID { get; set; }
    public string Name { get; set; }

    [InverseProperty("Author")]
    public ICollection<Book> Books { get; set; }
}
[DbConfigurationType(typeof(MySql.Data.Entity.MySqlEFConfiguration))]
public class StudentModelContext : DbContext
{
    public DbSet<Book> Books { get; set; }
    public DbSet<Author> Authors { get; set; }
}
}

Table structure

---

CREATE TABLE `tb_book` (
`ID` int(11) NOT NULL AUTO_INCREMENT,
`Title` varchar(45) DEFAULT NULL,
`Author_ID` int(11) DEFAULT NULL,
PRIMARY KEY (`ID`),
KEY `ab_idx` (`Author_ID`),
CONSTRAINT `ab` FOREIGN KEY (`Author_ID`) REFERENCES `tb_author` (`ID`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;


CREATE TABLE `tb_author` (
`ID` int(11) NOT NULL AUTO_INCREMENT,
`Name` varchar(45) DEFAULT NULL,
 PRIMARY KEY (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

Answer 2

Try to add 2 Students in your Review class, for example:

[Table("tb_review")]
public class Review
{    
    [Key]
    public int id { get; set; }
    public string message { get; set; }
    public Student student{ get; set; } // review of which student
    public Student reviewer{ get; set; } // whom send the review
} 

And your Student class should be like this:

[Table("tb_student")]
public class Student
{    
    [Key]
    public int id { get; set; }
    public string name { get; set; }
    [InverseProperty("student")]
    public List<Review> reviewAbout{ get; set; }
    [InverseProperty("reviewer")]
    public List<Review> reviewBy{ get; set; }
}