Database Systems MCQs - Chapter 19

RDBMS Interview Questions and Answers Multiple Choice Questions (MCQ) PDF - 4

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RDBMS Interview Questions and Answers Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: The relational algebra operation that removes duplicate tuples from the output, is known as

A) Selection

B) Natural join

C) Union operation

D) Projection

MCQ 17: The operation result that contains all pairs of tuples from the two relations, regardless of whether their attribute values match, is said to be

A) Intersection operation

B) Cartesian Product operation

C) Union operation

D) Join operation

MCQ 18: The query language type that uses predicate logic to define the result desired, without any specific procedure, is said to be

A) Domain relational calculus

B) Relational calculus

C) Domain relational algebra

D) Relational algebra

MCQ 19: All procedural relational query languages provide a set of operations that can be applied to

A) Single relation

B) Pair of relations

C) Single relation only

D) Both A and B

MCQ 20: The relational operations performed over queries are of types

A) 2 types

B) 3 types

C) 4 types

D) 5 types

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