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Lecture 4.1 (i) Relational Model Quiz

Authored by LATIFAH ZAKARIA

Computers

12th Grade

Used 1+ times

Lecture 4.1 (i) Relational Model Quiz
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the acronym ERD stand for?

Entity Relation Data

Entity Relation Diagram

Entity Relationship Diagram

Entity Record Diagram

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a component of an ERD?

Record

Attribute

Entity

Relationship

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a relational database, what does a table represent?

A single record

An entity set

A field

A key

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary key (PK) in a relational schema?

An attribute that can be duplicated

An attribute that uniquely identifies a row

An attribute that is always numeric

An attribute that is optional

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a field in a relational model?

A unique identifier for a record

A column representing a property of an entity

A relationship between two tables

A single row in a table

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a foreign key (FK)?

To uniquely identify a record

To create a common attribute between tables

To store data temporarily

To define the structure of a table

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many main components are there in an ERD?

Three

Six

Four

Five

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