EF 4.2 Create a relation one-to-one without relationship on the Database

Question

I need to rewrite a classic ASP to C#.NET and the system have 2 tables:

Table 1:

Table1
{
   [Key]
   public string WebRef {get;set;}
   ....
}

Table 2:

 Table2
{
  [Key]
  public string WebRef{get;set;}
  [Key]
  public int sequence{get;set;}
   .....
}

On the SQL Server they don't have any relation but It's one-to-one relationship.

Question: Is it possible to create a relationship using EF 4.2?

I need to put the table 2 inside the model of table 1 to be like:

Table1
{
   [Key]
   public string WebRef {get;set;}
   ....
   public Table2 table2{get;set}
}

Thank you in advance.

Answer 1

Try this

public class Table1
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOptions.Identity)]
    public int Table1ID{get;set;}

}

public class Table2
{
     [Key]
     [DatabaseGenerated(DatabaseGeneratedOptions.Identity)]
     public int Table2ID{get;set;}

     [ForeignKey("Table1")]
     public int Table1ID {get;set;}

     public virtual Table1 Table1 {get; set;}

}

This is a One-to-N relationship, to make a One-to-One relationship, you need to set Table1ID of Table2 as UniqueKey by SQLSERVER, because EF CodeFirst does not support unique keys...