Two Parent and one child DataRelation , Is it possible?

[Naumaan]

I have 3 tables [ tblItems , tblUser , tblUsage]

tblItem [ ItemId , Item Name , Description ]
tblUser [ UserId , UserFirstName , UserLastName ,........]
tblUsage[ ItemId , UserId , BeginDate , EndDate , ..........]

I need to create a relation of such tblUsage as child of two parents ( tblItem and tblUser ) but when i create its relation then it gives me error like "Cannot create a Key from Columns that belong to different tables."

Is it possible or not. . Any suggestions would be appreciated.

Thanks in Advance.