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MCQ

If you were collecting and storing information about your music collection, an album would be considered a(n) _____

Relation

Entity

Instance

Attribute

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. In an E-R diagram attributes are represented by

rectangle

square

ellipse

triangle

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MCQ

A window into a portion of a database is

Schema

View

Query

Data dictionary

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MCQ

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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MCQ

Department (dept name, building, budget) and Employee (employee_id, name, dept name, salary) Here the dept_name attribute appears in both the relations. Here using common attributes in relation schema is one way of relating ___________ relations.

Attributes of common

Tuple of common

Tuple of distinct

Attributes of distinct

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MCQ

In E-R diagram generalization is represented by

Ellipse

Dashed ellipse

Rectangle

Triangle

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Engineering

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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