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Consider the following six relation schemes and their corresponding sets of functional dependencies. In each case identify
a. All the candidate keys
b. The highest normal form of the relation (2NF, 3NF, BCNF).
R1 (W, X, Y, Z) XY→Z, Y→ W
R2 (K,L,M,N) KL→N, K→M
R3 (P,Q,R,S) P→Q, Q→R, R→S
R4 (T,U,V) T→U, U→T, T→V
R5 (W,X,Y,Z) Z→W, YZ→W, WY→XZ
R6 (A,B,C,D) AB→D, AC→D
sql is relationally complete-justify
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complete assignment on the above title.
Consider the table student and list names of students in the departments other than maths and computer. SELECT std_name FRM student WHERE dept_name NOT IN (‘Maths','Computer);
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