Chapters6And7

Chapters6And7

University

18 Qs

quiz-placeholder

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Chapters6And7

Chapters6And7

Assessment

Quiz

Other

University

Practice Problem

Hard

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not one of the main problems with a traditional file environment?

data inconsistency

program-data independence

lack of flexibility in creating ad-hoc reports

poor security

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A field identified in a table as holding the unique identifier of the table's records is called the

primary key

foreign key

tuple

attribute

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The specialized language programmers use to add and change data in the database is called

a data access language.

a data manipulation language.

structured query language.

a data definition language.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In data mining, which of the following involves recognizing patterns that describe the group to which an item belongs by examining existing items and inferring a set of rules?

Associations

Sequences

Classifications

Clustering

Forecasting

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called

data auditing.

defragmentation.

data scrubbing.

data optimization.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ________________________ is a database that stores current and historical data of potential interest to decision makers throughout the company.

data warehouse

in-memory computing

analytic platforms

Data mining

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Each characteristic or quality describing a particular entity is called an attribute.

True

False

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