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

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The MCQ: A variable-length string type with user-specified length, known as; "Database Systems MCQs" App Download [Free] with answers: varchar, float, char, and smallint for online computer science degrees. Solve View of Data Quiz Questions, download Google e-Book (Free Chapter) for computer science associate degree.

Introduction to SQL MCQs – Practice Test 13 PDF Download

MCQ: 61

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

  1. float
  2. varchar
  3. char
  4. smallint
MCQ: 62

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

  1. Attribute's domain
  2. Tuple's domain
  3. Relation domain
  4. Variable charter
MCQ: 63

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

  1. Whole
  2. Total
  3. All
  4. Complete
MCQ: 64

Many database systems do not support

  1. Dropping entire table
  2. Dropping of attributes
  3. Deleting table
  4. Deleting attributes
MCQ: 65

The operands of the logical connectives can be expressions involving

  1. Arithmetic operators
  2. Comparison operators
  3. Numeric operators
  4. Bound operators

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