Database Systems Practice Test 267

Aggregate Functions Quiz PDF: Questions and Answers - 267

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Aggregate Functions Questions and Answers PDF Download: Quiz 267

MCQ 1331: A Boolean data type that can take values true, false, and unknown, was introduced in

A) SQL:1998

B) SQL:1998

C) SQL:1999

D) SQL:2000

MCQ 1332: After the deletion operation, the relation

A) Still exists

B) Doesn't exists

C) Is empty

D) Both A and B

MCQ 1333: SQL allows us to search for mismatches instead of matches by using the

A) Like operator

B) AS operator

C) NOT Like operator

D) NOT AS operator

MCQ 1334: A simpler technique for reasoning about functional dependencies, is known as

A) Union

B) Decomposition

C) Pseudotransitivity

D) Axioms

MCQ 1335: Specifying tuples within a given relation, are expressed in terms of the

A) Attributes

B) Variables

C) Function

D) Domain

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