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MCQ

In the relational modes, cardinality is termed as:

Number of tuples.

Number of attributes.

Number of tables.

Number of constraints.

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Consider a directed line(->) from the relationship set advisor to both entity sets instructor and student. This indicates _________ cardinality

One to many

One to one

Many to many

Many to one

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MCQ

In E-R diagram generalization is represented by

Ellipse

Dashed ellipse

Rectangle

Triangle

Discussion

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If an entity set is a lower-level entity set in more than one ISA relationship, then the entity set has

Hierarchy

Multilevel inheritance

Single inheritance

Multiple inheritance

Discussion

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Establishing limits on allowable property values, and specifying a set of acceptable, predefined options that can be assigned to a property are examples of:

Attributes

Data integrity constraints

Method constraints

Referential integrity constraints

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Let us consider phone_number ,which can take single or several values . Treating phone_numberas an _________ permits instructors to have several phone numbers (including zero) associated with them.

Entity

Attribute

Relation

Value

Discussion

Banking

Engineering

General

Medical

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Relational Algebra

Database Systems

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Entity Relationship (ER) Modeling

Advanced Data Modeling

Normalization

Structured Query Language (SQL)

Advanced SQL

Database Design

Transaction and Concurrency

Data Warehouses

Database Administration

Mixed

Banking

Engineering

General

Medical

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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

Mixed

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Community Discussion

Similar Questions

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More Database Management System Topics