DataContext.CreateDatabase Attribute Compiler Error

I looked at this example http://msdn.microsoft.com/en-us/library/bb399420.aspx and clicked on DataContext.CreateDatabase which brought me to this page http://msdn.microsoft.com/en-us /library/system.data.linq.datacontext.createdatabase.aspx

It says to use the System.Data.Linq namespace and include the System.Data.Linq reference.

I did it and returned an error

error CS0246: The type or namespace name 'Column' could not be found (are you missing a using directive or an assembly reference?)

[Table(Name = "DVDTable")]
public class DVD
{
    [Column(IsPrimaryKey = true)] //<-- here
    public string Title;
    [Column]
    public string Rating;
}

      

        
        
        
      

    

How do I fix this error?