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Question:

Cramster Expert

Isabeli(CS SME)

(Cramster SME)

Cramster In-House Subject Matter Expert

Date Posted: 5/12/2008 6:25:03 AM Status: Live

Asker's Rating: Helpful

Response:

Dear,

First(A,B,C) Join Second(B,C)

π(First(A,B,C) - π(Second(B,C))

ii) union operation

First(A,B,C) U Second(B,C)

(A,B,C)

iii)

First Second Divide

------ -------- -------

A B A

B C

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