Database Management System Exam MCQs – Practice Test 4 (Chapter 11)

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Relational Algebra & Calculus Notes Q&A PDF Download – Practice Test 4

MCQ 16: In the relational calculus, the variables are bounded with the help of:

non-identifiers
non-quantifiers
quantifiers
identifiers

MCQ 17: In unary relational operations, the symbols such as equal to, less than and greater than are classified as:

tuple operators
column operators
comparison operators
row operators

MCQ 18: The JOIN operation which uses any of the comparison operators is classified as:

THETA JOIN
CHI-JOIN
PI-JOIN
SIGMA-JOIN

MCQ 19: The kind of operation by which one tuple can be created with the help of combining tuples from two relations is classified as:

square operation
join operation
division operation
relation operation

MCQ 20: Consider two tuples X and Y, the operation whose result includes tuples that are only in X but not in Y is classified as:

square of relation X and Y
union of relation X and Y
intersection of relation X and Y
difference of relation X and Y

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