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Chapter 21: Database Systems Exam Tests

Database Systems MCQs - Chapter 21

SQL Concepts and Queries Multiple Choice Questions PDF Download - 41

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SQL Concepts and Queries Questions & Answers PDF Download: MCQ Quiz 41

MCQ 201: The current time is returned by the method

A) system.time
B) time.system
C) current.time
D) time.current

MCQ 202: The null value is a member of all

A) Domains
B) Variables
C) Procedures
D) Languages

MCQ 203: SQL prohibits null values in the relation schema's constraint of

A) Primary key
B) Foreign key
C) Unique key
D) Candidate key

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SQL Concepts and Queries App (Android & iOS)

SQL Concepts and Queries App (Android & iOS)

Database Management System App (Android & iOS)

Database Management System App (Android & iOS)

Computer Architecture App (Android & iOS)

Computer Architecture App (Android & iOS)

Semantic Web App (Android & iOS)

Semantic Web App (Android & iOS)