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MCQ

The term _______ is used to refer to a row.

Attribute

Tuple

Field

Instance

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In E-R diagram generalization is represented by

Ellipse

Dashed ellipse

Rectangle

Triangle

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A window into a portion of a database is

Schema

View

Query

Data dictionary

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Data integrity constraints are used to:

Control who is allowed access to the data

Ensure that duplicate records are not entered into the table

Improve the quality of data entered for a specific property

Prevent users from changing the values stored in the table

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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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E-R model uses this symbol to represent weak entity set ?

Dotted rectangle.

Diamond

Doubly outlined rectangle

None of these

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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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