Question

Which of the following are the part of relational algebra operation?
Α. pi
B. sigma
C. union
D. subset​

Answer 1

Answer:

Explanation:

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Answer 2

Answer:

C)

Explanation:

part of relational algebra operation

1) UNION (υ)

2) INTERSECTION ( ),

3) DIFFERENCE (-)

4) CARTESIAN PRODUCT ( x )