Deck 3: Data and Knowledge Management

Question 1

The data in a data warehouse have which of the following characteristics?

A) They are organized by subject.
B) They are coded in different formats.
C) They are updated in real time.
D) They are typically retained for a defined, but limited, period of time.
E) They are updated in real time.

Answer 1

A

Question 2

Databases can be used to allow physicians to view their patients' medical records the moment they are brought into a hospital.

Answer 2

True

Question 3

The most common architecture used to store decision-support data is independent data marts.

Answer 3

False

Question 4

Place the following members of the data hierarchy in the correct order:

A) bit - byte - field - record - database - data file
B) bit - field - byte - record - data file - database
C) byte - bit - record - field - database
D) bit - byte - field - record - data file - database
E) bit - record - field - byte - data file - database

Question 5

In a database, the primary key is used to _____.

A) specify an entity
B) create linked lists
C) identify duplicated data
D) uniquely identify a record
E) uniquely identify an attribute

Question 6

Which of the following is an example of explicit knowledge?

A) Experiences
B) Insights
C) Procedural guides
D) Expertise
E) Proficiency

Question 7

_____ are data generated when users visit a Web site and click on hyperlinks.

A) Tracking cookies
B) Floaters
C) Clickstream data
D) Web data
E) Hyperlink data

Question 8

Managing data comes at a high cost to a company.

Question 9

The total amount of data in the world is increasing exponentially over time.

Question 10

Which of the following words best describes the characteristics of explicit knowledge?

A) Objective
B) Personal
C) Slow
D) Costly to transfer
E) Ambiguous

Question 11

The primary key is a field that uniquely and completely identifies a record in a database.

Question 12

Which of the following statements is true of the differences between data marts and data warehouses?

A) Data marts cost lesser than data warehouses.
B) Data marts have longer lead time for implementation than data warehouses.
C) Data marts have central control, whereas data warehouses provide local control.
D) Data marts contain more information than data warehouses.
E) Data marts are harder to navigate than data warehouses.

Question 13

Big Data's three distinct characteristics are:

A) volume, variety, and stability.
B) volume, velocity, and conformity.
C) volume, variety, and velocity.
D) volume, variety, and verification.

Question 14

Data integrity has been achieved if a database contains the same information under a particular record as other databases.

Question 15

The physical location of thousands of plants can be tracked using radio-frequency identification tags.

Question 16

The most important benefit of knowledge management systems is _____.

A) better access to customers' complaints
B) they make best practices available to employees
C) distribution of organizational policies
D) improved morale among employees
E) they highlight the business units that generate the highest profits

Question 17

Big Data can be used to track every individual plant grown in a particular state.

Question 18

In a relational database that stores information on customers, the second column lists customers' last name. In this instance, the last name is a(n) _____.

A) attribute
B) entity
C) primary key
D) object
E) relation

Question 19

Which of the following statements about Big Data is NOT true?

A) Big Data is difficult to define.
B) Big Data includes structured, unstructured, and semi-structured data.
C) Big Data does not include images.
D) Big Data exhibits variety.

Question 20

Which of the following statements is true about the difficulty of managing data?

A) The amount of data stays about the same over time.
B) Data are scattered throughout organizations.
C) The decreasing amount of external data needs to be considered.
D) Data security is easy to maintain.
E) Data are stored in the same format across organizations.

Question 21

Big Data can be used to collate data that is present in different formats.

Question 22

Big Data cannot be used to present information about a patient to any doctor that the patient visits.