Question Discussion & Solution

MCQ

The completeness constraint may be one of the following: Total generalization or specialization, Partial generalization or specialization. Which is the default?

Total

Partial

Should be specified

Cannot be determined

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There are similarities between the instructor entity set and the secretary entity set in the sense that they have several attributes that are conceptually the same across the two entity sets: namely, the identifier, name, and salary attributes. This process is called

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Specialization

Generalization

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For a weak entity set to be meaningful, it must be associated with another entity set, called the

Identifying set

Owner set

Neighbour set

Strong entity set

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Drop Table cannot be used to drop a table referenced by a _________ constraint.

Local Key

Primary Key

Composite Key

Foreign Key

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In E-R Diagram relationship type is represented by

Ellipse

Dashed ellipse

Rectangle

Diamond

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An entity set that does not have sufficient attributes to form a primary key is termed a __________

Strong entity set

Variant set

Weak entity set

Variable set

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category More Database Management System Topics

Miscellaneous or General

Relational Algebra

Database Systems

Data Models

The Relational Database Model

Entity Relationship (ER) Modeling

Advanced Data Modeling

Normalization

Structured Query Language (SQL)

Advanced SQL

Database Design

Transaction and Concurrency

Data Warehouses

Database Administration

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