Suppose F {fd1, fd2} consists of the following functional dependencies: fd1: Ssn {Ename, Bdate, Address, Dnumber}
Question:
fd1: Ssn → {Ename, Bdate, Address, Dnumber}
fd2: Dnumber → {Dname, Dmgrssn}
Which of Armstrong's axioms allows the following additional functional dependencies to be inferred?
a. Ssn → {Dname, Dmgrssn}
b. Ssn → Ssn
c. Dnumber → Dname
d. Ssn → Dname
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a Rule of Decomposition Ssn Dnumber and Rule of Tr...View the full answer
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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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