Foreign key relationship with composite primary keys in SQL Server 2005

Question

I have two tables

Table1(
  FileID,
  BundledFileID,
  Domain)

and

Table2(
  FileID,
  FileType,
  FileName)

Answer 1

marc has already given a pretty good answer. If the rows in Table1 only ever relate to one type of File (e.g. FileType 'ABC'), then you can add FileType to Table1 as a computed column:

ALTER TABLE Table1 ADD FileType as 'ABC'

Which you can then use in the Foreign Key.