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Database Systems Study Material: Practice Test 7 (Chapter 15)

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The Introduction to SQL Quiz Questions and Answers PDF (Introduction to SQL Quiz PDF e-Book) download Ch. 15-7 to study Database Systems Course. Practice Set Operations MCQs, Introduction to SQL MCQ questions and answers PDF for online bachelor's degree computer science. The Database Systems Quiz App Download: Free Introduction to SQL App to study basic structure of sql queries, sql data definition career test for computer majors.

The Quiz: The result of Boolean expression 'true and unknown' is; "Introduction to SQL" App (iOS, Android) with answers: false, true, unknown, and null to learn software engineering courses. Study View of Data Quiz Questions, download Google Book (Free Sample) for online bachelor's degree computer science.

Introduction to SQL Exam Questions and Answers PDF Download: Test 7

MCQ: 31

The result of Boolean expression 'true and unknown' is

  1. True
  2. False
  3. Unknown
  4. Null
MCQ: 32

The query for finding the department names of all instructors, is

  1. select dept_name about instructor;
  2. define dept_name from instructor;
  3. select dept_name from instructor;
  4. define dept_name about instructor;
MCQ: 33

If 'A' is null for a particular tuple, then the expression result must also be null for that

  1. Expression
  2. Attribute
  3. Tuple
  4. Relation
MCQ: 34

SQL prevents any update to the database that violates an

  1. Declaration
  2. Definition
  3. Constraint
  4. Attributes
MCQ: 35

Since duplicate retention is the default, we shall not use

  1. Distinct
  2. All
  3. Describe
  4. Whole

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Introduction to SQL Quiz App (Android & iOS)

Introduction to SQL Quiz App

DataBase Management System (MCS) Quiz App (iOS & Android)

DataBase Management System (MCS) Quiz App

Basic Sociology Quiz App (iOS & Android)

Basic Sociology Quiz App

MCQsLearn: All-in-One Courses Quiz App (Android & iOS)

MCQsLearn: All-in-One Courses Quiz App