Consider relation SUPPLY (S#, Sname, P#, Qty) with supplier names unique such that: F: fd1: S#
Question:
F: fd1: S# ïƒ Sname; fd2: Sname ïƒ S#; {S#, P#} ïƒ Qty
S# represents a supplier number, Sname represents a supplier name, P# represents a part number, and Qty represents the quantity of a specific part supplied by a specific supplier.
a. Is there a 3NF violation in SUPPLY? If yes, explain. If no, is there a BCNF violation in SUPPLY? Explain.
b. Decompose SUPPLY if necessary so that the resulting relational schema is in BCNF. Is your design attribute-preserving, dependency-preserving, and a lossless-join decomposition? Explain.
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Related Book For
Data Modeling and Database Design
ISBN: 978-1285085258
2nd edition
Authors: Narayan S. Umanath, Richard W. Scammel
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