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Relational DBMS Objective Questions and Answers : Database Management System MCQs

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Database management system multiple choice questions 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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(26) A number of related records that are treated as a unit is called :
[A] file
[B] field
[C] data
[D] batch

Comment

Answer: Option [A]
(27) One limitation of the entity-relationship model is that it cannot :
[A] use generalization
[B] express relationship among relationships
[C] use single primary key
[D] none of the above

Comment

Answer: Option [B]

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(28) In a relational schema, each tuple is divided into fields is called :
[A] Relations
[B] Domains
[C] Queries
[D] None of the above

Comment

Answer: Option [B]
(29) 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]
(30) Which of the following is not a logical database structure ?
[A] tree
[B] relational
[C] network
[D] chain

Comment

Answer: Option [D]

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

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