Database Systems Competitive Exam MCQs – Practice Test 13 (Chapter 15)

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Introduction to SQL MCQs – Practice Test 13 PDF Download

MCQ 61: A variable-length string type with user-specified length, known as:

float
varchar
char
smallint

MCQ 62: The attribute values for inserted tuples must be members of the corresponding:

Attribute's domain
Tuple's domain
Relation domain
Variable charter

MCQ 63: To specify explicitly that duplicates are not removed, SQL allows to use the keyword:

Whole
Total
All
Complete

MCQ 64: Many database systems do not support:

Dropping entire table
Dropping of attributes
Deleting table
Deleting attributes

MCQ 65: The operands of the logical connectives can be expressions involving:

Arithmetic operators
Comparison operators
Numeric operators
Bound operators

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