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Database Systems Exam Prep MCQs – Mock Test 436

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The MCQ: SQL prohibits null values in the relation schema's constraint of; "Integrity Constraints" App (Free Android & iOS) with answers: foreign key, primary key, candidate key, and unique key to learn online certificate courses. Practice SQL Concepts and Queries Questions and Answers, Google eBook to download free chapter for computer software engineer online degree.

Integrity Constraints MCQ – Mock Test 436 PDF Download

MCQ: 2176

SQL prohibits null values in the relation schema's constraint of

  1. Primary key
  2. Foreign key
  3. Unique key
  4. Candidate key
MCQ: 2177

A model that can be viewed as a variant of the entity-relationship model is called

  1. Entity Medium Model
  2. Entity View Model
  3. Entity Data Model
  4. Entity Logic Model
MCQ: 2178

A special character prefaces DML calls, and a preprocessor, known as the

  1. DML compiler
  2. DML precompile
  3. DML executor
  4. DML pre-executor
MCQ: 2179

A transaction is said to have terminated if it has

  1. Committed
  2. Aborted
  3. Partially committed
  4. Both A and B
MCQ: 2180

To overcome the problems with conventional file processing system, we need

  1. Data-evaluation system
  2. Data-insertion system
  3. Data processing system
  4. Data storage system

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Integrity Constraints MCQs App (Android & iOS)

Integrity Constraints MCQs App

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