Explain Trivial Functional dependencies with example. (3) b. Explain Multivalued dependencies and also describe 4NF with appropriate example.
Explain the Inner Join concept in Relational Algebra. (3) Q.4 a. Explain Trivial Functional dependencies with example. (3) b. Explain Multivalued dependencies and also describe 4NF with appropriate example. (9) c. Give a Relation R(W,X,Y,Z) and functional dependencies are given as: W ? Z {Y,Z}? X {W,Z}? Y Find superkeys and candidate key. (6) Q.5 a. What is a lock? Describe the types of locks used in concurrency control?
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