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What is a relationship called when it is maintained between two entities?

Unary

Binary

Ternary

Quaternary

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In E-R diagram generalization is represented by

Ellipse

Dashed ellipse

Rectangle

Triangle

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Course(course_id,sec_id,semester) Here the course_id,sec_id and semester are __________ and course is a _________

Relations, Attribute

Attributes, Relation

Tuple, Relation

Tuple, Attributes

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_____________ express the number of entities to which another entity can be associated via a relationship set.

Mapping Cardinality

Relational Cardinality

Participation Constraints

None of the mentioned

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information stored about a specific album?

Relation

Instance

Table

Column

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Given the basic ER and relational models, which of the following is INCORRECT?

An attribute of an entity can have more than one value

An attribute of an entity can be composite

In a row of a relational table, an attribute can have more than one value

In a row of a relational table, an attribute can have exactly one value or a NULL value

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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

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