entity framework 4.1 - Configuring EF code first without a foreign key -

i have following model:

public class product {     public long id { get; set; }     public string name { get; set; }     public virtual icollection<catalog> matches { get; set; } }  public class catalog {     public long id { get; set; }     public string title { get; set; } } 

using entity framework code first configure using:

public dbset<product> products { get; set; } public dbset<catalog> catalogs { get; set; }  protected override void onmodelcreating(dbmodelbuilder modelbuilder) {     // not rules setup yet } 

currently when ef creates database creates nullable foreign key in catalogs table called product_id. there way configure ef not create foreign key in catalog table?

the catalog table contains imported items catalog should have no relation products table. @ run time search query fired each product , result added catalog collection of product object.

for purpose exclude matches collection model, either data annotation...

public class product {     public long id { get; set; }     public string name { get; set; }     [notmapped]     public virtual icollection<catalog> matches { get; set; } } 

...or in fluent code:

 modelbuilder.entity<product>()              .ignore(p => p.matches);