Filters
Question type

Study Flashcards

In associations, a data mining tool discovers different groupings within data, such as finding affinity groups for bank cards.

A) True
B) False

Correct Answer

verifed

verified

The relationship between entities and attributes is best illustrated by


A) the entity CUSTOMER with the attribute PRODUCT.
B) the entity CUSTOMER with the attribute PURCHASE.
C) the entity PRODUCT with the attribute PURCHASE.
D) the entity PRODUCT with the attribute CUSTOMER.
E) the entity PURCHASE with the attribute CUSTOMER.

F) A) and B)
G) A) and C)

Correct Answer

verifed

verified

Relational DBMSs use key field rules to ensure that relationships between coupled tables remain consistent.

A) True
B) False

Correct Answer

verifed

verified

A(n) ________ is a characteristic or quality that describes a database entity.


A) field
B) tuple
C) key field
D) attribute
E) relationship

F) B) and D)
G) A) and E)

Correct Answer

verifed

verified

The policies and processes for managing the integrity and security of data in a firm are referred to as data governance.

A) True
B) False

Correct Answer

verifed

verified

The data dictionary serves as an important data management tool by


A) assigning attributes to the data.
B) creating an inventory of the data elements contained in the database.
C) presenting data as end users or business specialists would perceive them.
D) maintaining data in updated form.
E) providing a guide to database terms and settings.

F) C) and D)
G) B) and C)

Correct Answer

verifed

verified

Data cleansing not only corrects errors but also


A) establishes logical relationships between data.
B) structures data.
C) normalizes data.
D) removes duplicate data.
E) enforces consistency among different sets of data.

F) D) and E)
G) A) and E)

Correct Answer

verifed

verified

A household appliances manufacturer has hired you to help analyze their social media datasets to determine which of their refrigerators are seen as the most reliable. Which of the following tools would you use to analyze this data?


A) text mining tools
B) sentiment analysis software
C) Web usage mining technologies
D) data mining software for identifying associations
E) data mining software for forecasting

F) B) and C)
G) A) and D)

Correct Answer

verifed

verified

A(n) ________ is an example of non-digital data storage that is comparable to a database.


A) library card catalog
B) cash register receipt
C) doctor's office invoice
D) list of sales totals on a spreadsheet
E) schedule of due dates on a project outline

F) A) and B)
G) A) and E)

Correct Answer

verifed

verified

In a relational database, a record is referred to in technical terms as a(n)


A) tuple.
B) row.
C) entity.
D) field.
E) key.

F) A) and B)
G) B) and E)

Correct Answer

verifed

verified

List at least three conditions that contribute to data redundancy and inconsistency.

Correct Answer

verifed

verified

Data redundancy occurs when different di...

View Answer

A database server is software that handles all application operations between browser-based computers and a company's back-end business applications or databases.

A) True
B) False

Correct Answer

verifed

verified

You can manipulate data on a Web server by using a CGI script.

A) True
B) False

Correct Answer

verifed

verified

The organization's rules for sharing, disseminating, acquiring, standardizing, classifying, and inventorying information is called a(n)


A) information policy.
B) data definition file.
C) data quality audit.
D) data governance policy.
E) data policy.

F) All of the above
G) B) and C)

Correct Answer

verifed

verified

In a table for customers, the information about a single customer would reside in a single


A) field.
B) row.
C) column.
D) table.
E) entity.

F) None of the above
G) B) and E)

Correct Answer

verifed

verified

The logical view of a database


A) displays the organization and structure of data on the physical storage media.
B) includes a digital dashboard.
C) allows the creation of supplementary reports.
D) enables users to manipulate the logical structure of the database.
E) presents data as they would be perceived by end users.

F) A) and E)
G) A) and C)

Correct Answer

verifed

verified

To perform multidimensional data analysis, you would use OLAP.

A) True
B) False

Correct Answer

verifed

verified

What are the differences between data mining and OLAP? When would you advise a company to use OLAP?

Correct Answer

verifed

verified

Data mining uncovers hidden relationship...

View Answer

A data warehouse is composed of


A) historical data from legacy systems.
B) current data.
C) internal and external data sources.
D) historic and current internal data.
E) historic external data.

F) C) and D)
G) B) and E)

Correct Answer

verifed

verified

The most prominent data manipulation language today is


A) Access.
B) DB2.
C) SQL.
D) Crystal Reports.
E) NoSQL.

F) C) and E)
G) D) and E)

Correct Answer

verifed

verified

Showing 21 - 40 of 90

Related Exams

Show Answer