DB Revision

DB Revision

University

32 Qs

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DB Revision

DB Revision

Assessment

Quiz

Computers

University

Practice Problem

Medium

Created by

Kesmat AbdelAziz

Used 2+ times

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32 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A two-dimensional table of data sometimes is called a

Group

Relation

Set

declartion

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

is a component of the relational data model included to specify business rules to maintain the integrity of data when they are manipulated.

Business rule constraint

Data integrity

Business integrity

Data Structure

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An attribute (or attributes) that uniquely identifies each row in a relation is called a:

Foreign Key

Primary Key

Column

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A primary key that consists of more than one attribute is called a:

foreign key

composite key

multivalued key.

cardinal key.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the SQL language, the ________ statement is used to make table definitions.

create session

create table

create index

select

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of the following are the main goals of normalization EXCEPT:

minimize data redundancy.

simplify the enforcement of referential integrity.

maximize storage space.

make it easier to maintain data.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When all multivalued attributes have been removed from a relation, it is said to be in:

First Normal Form

Second Normal Form

Third Normal Form

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