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Database Systems Certification Exam Tests

Database Systems Practice Test 313

Set Operations Quiz Questions and Answers PDF Download - 313

The Set Operations Quiz Questions and Answers PDF (Set Operations Quiz with Answers PDF e-Book) download Ch. 15-313 to prepare Database Systems Practice Tests. Solve Introduction to SQL MCQ with answers PDF, Set Operations Multiple Choice Questions (MCQ Quiz) for computer and information science. The Set Operations Quiz App Download: Free learning app for constraints in dbms, database languages, nested subqueries, view of data, set operations test prep for bachelor's degree in computer science.

The Quiz: The result of Boolean expression 'true or unknown' is; "Set Operations" App Download (Free) with answers: Null; False; Unknown; True; for computer and information science. Learn Introduction to SQL Questions and Answers, Apple eBook to download free sample for online computer science programs.

Set Operations Questions and Answers PDF Download: MCQ 313

MCQ 1561:

The result of Boolean expression 'true or unknown' is

  1. False
  2. Null
  3. Unknown
  4. True
MCQ 1562:

Database systems have several schemas, partitioned according to the

  1. Data
  2. Constraints
  3. Requirement
  4. Level of abstraction
MCQ 1563:

The number of errors in the following subquery is/are
(select salary
from instructor
where dept name=Biology)

  1. 0
  2. 1
  3. 2
  4. 3
MCQ 1564:

Query processor component of the database system translates DML queries into sequences of actions at the

  1. Physical Level
  2. Logical Level
  3. View Level
  4. Virtual Level
MCQ 1565:

The difference of entities must be expressed in terms of their

  1. Values
  2. Locators
  3. Size
  4. Attributes

Database Systems Exam Prep Tests

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Set Operations App (Android & iOS)

Set Operations App (Android & iOS)

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

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

Sociology App (Android & iOS)

Sociology App (Android & iOS)

C++ App (Android & iOS)

C++ App (iOS & Android)