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RDBMS Objective Question Bank with Answers | Database Management System MCQs and Answers

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Database management system MCQs and answers page contain 5 questions from chapter Relational DBMS. Each objective question has 4 possible answers. Choose your answer and check it with the given correct answer.
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(41) The relational model is concerned with
[A] Data structure and Data integrity
[B] Data manipulation
[C] Both [A] and [B]
[D] None of these

Comment

Answer: Option [C]
(42) Which key provides the basic tuple-level addressing mechanism in a relational System ?
[A] Candidate Key
[B] Alternative Key
[C] Primary Key
[D] None of these

Comment

Answer: Option [A]

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(43) Pick out the false statement from the following :
[A] A view is a named derived table
[B] A view is named relation and is virtual
[C] A name relation is a variable
[D] None of these

Comment

Answer: Option [D]
(44) Any entity in A is associated with any number of entities in B, however an entity in B is associated with almost one entity in A
[A] One to One
[B] Many to Many
[C] Many to One
[D] One to Many

Comment

Answer: Option [D]
(45) The union of Primary keys of the related entity sets becomes a ________ of the relation.
[A] Super Key
[B] Candidate Key
[C] Foreign Key
[D] Primary Key

Comment

Answer: Option [A]

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DATABASE MANAGEMENT SYSTEM MULTIPLE CHOICE QUESTIONS & ANSWERS – E-BOOK

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