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Entity Relationship Model Objective Questions and Answers - Database Management System MCQs

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Database management system objective questions and answers page contain 5 questions from chapter Entity Relationship Model. Each MCQ has 4 possible answers. Choose your answer and check it with the given correct answer.
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(6) Choose the most appropriate choice with respect to conceptual design.
[A] Conceptual design is a documentation technique. Once the relation schemes are defined one can draw E-R diagrams from the relation schemes for documentation
[B] Conceptual design needs data volumn and processing frequencies to determine the size of the database
[C] Output of any conceptual design is an E-R diagram
[D] Conceptual design involves modeling the data requirements independent of the DBMS, operating system and the hardware.

Comment

Answer: Option [D]
(7) E-R modeling technique is a :
[A] Top-down approach
[B] Bottom-up approach
[C] Left-right approach
[D] None of the above

Comment

Answer: Option [A]

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(8) In an E-R model Oval represents :
[A] entity sets
[B] attributes
[C] relationships
[D] links

Comment

Answer: Option [B]
(9) The number of entities to which another entity can be associated via a relationship set is expressed as :
[A] Entity
[B] Cardinality
[C] Schema
[D] Attributes

Comment

Answer: Option [B]
(10) Every weak entity set can be converted to a strong entity set by :
[A] Simply adding appropriate attribute
[B] Using generalization
[C] Using aggregation
[D] Repeating the entity set several times

Comment

Answer: Option [B]

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

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