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Introduction to SQL MCQ App Download | Database Systems PDF e-Book

Database Systems MCQs: Chapter 15

Introduction to SQL Trivia Questions & Answers PDF Download | 20

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Introduction to SQL Test Questions and Answers PDF Download: MCQ 20

MCQ: 96

Language that can define the structure of the data, modify data in the database, and specify security constraints, is

  1. DB2
  2. JAVA
  3. XML
  4. SQL
MCQ: 97

The operation that performs the set difference, is called

  1. The Intersection Operation
  2. The Intersection all Operation
  3. The Except Operation
  4. The Union Operation
MCQ: 98

We can use the not exists construct to simulate the set containment, which is a

  1. Query operation
  2. Subquery operation
  3. Subset operation
  4. Dataset operation
MCQ: 99

The names of the attributes in the result are derived from the names of the attributes in the relations in the

  1. From clause
  2. Define clause
  3. Select clause
  4. Where clause
MCQ: 100

All aggregate functions for their input collection, except count(*) ignore the

  1. Strings
  2. Null value
  3. 0s
  4. 1s

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