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Home -> Community -> Usenet -> comp.databases.theory -> Re: relation algebra query
Ok, given that you now have a possible answer, allow me to pretend
ignorance for a moment and claim I don't understand why the projection
of a join between a relation and the division of a projection of a
selection of a relation and the projection of a relation is the
answer to the question.
Can you provide your own explaination why the answer is or is not correct?
Cim Received on Sun May 05 2002 - 15:51:31 CDT