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MCQ

The term attribute refers to a ___________ of a table.

Record

Column

Tuple

Key

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Which of the following can be addressed by enforcing a referential integrity constraint?

All phone numbers must include the area code

Certain fields are required (such as the email address, or phone number) before the record is accepted

Information on the customer must be known before anything can be sold to that customer

Then entering an order quantity, the user must input a number and not some text (i.e., 12 rather than

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MCQ

A ________ in a table represents a relationship among a set of values.

Column

Key

Row

Entry

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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

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

Which of the following indicates the maximum number of entities that can be involved in a relationship?

Minimum cardinality

Maximum cardinality

ERD

Greater Entity Count

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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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