• In short yes. Check out this BOL subject

    ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/udb9/html/68ae44ef-990c-49c2-b502-ff1dc41b4019.htm

    You can copy column properties from a primary key column to a foreign key column if you want to relate the two columns. Related columns must have the same data type (or data types that can be related) and length.

    If everything seems to be going well, you have obviously overlooked something.

    Ron

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