Database Management System MCQs – Practice Test 7 (Chapter 11)

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Relational Algebra & Calculus Quiz – Practice Test 7 PDF Download

MCQ 31: In relational calculus, the expression which does not guarantees finite number of tuples is classified as:

unsafe expression
safe expression
declarative expression
stable expression

MCQ 32: In unary relational operations, the PROJECT operation is partition of relation usually classified as:

horizontal partition
vertical partition
insert partition
delete partition

MCQ 33: The JOIN operation in which two attributes joined have same name in both relations is classified as:

UNNATURAL JOIN
THETA JOIN
ALPHA JOIN
NATURAL JOIN

MCQ 34: Consider two tuples A and B, the operation whose result includes tuples that are included in both relations is classified as:

intersection of relation A and B
difference of relation A and B
square of relation A and B
union of relation A and B

MCQ 35: The operation which is used to select the subset of tuples by satisfying the selection constraint and the selection is made from relation is classified as:

CHOOSE operation
SELECT operation
NON-SELECT operation
SUBSET operation

Relational Algebra & Calculus Quiz App & e-Book – Database Management System Study Material

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