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Information Systems CH 5

Which of the following problems do organizations face when managing data?

A. All of these
B. Collecting the vast amounts of data that are being generated
C. Processing and analyzing the data that are being stored
D. Storing the data that are being collected

A. All of these
The term “data rot” refers to
A. Data that no longer serve a purpose.
B. The deterioration of the medium on which the data are stored.
C. Data that are irrelevant or contain errors.
D. All of these.
B. The deterioration of the medium on which the data are stored.
Data redundancy refers to:
A. Storing data in a single central location.
B. Sharing data with others.
C. Having copies of the same data in multiple locations.
D. All of these.
C. Having copies of the same data in multiple locations.
The management of data across the entire organization is most accurately defined as:

A. Data integration.
B. Data control.
C. Data governance.
D. Data administration

C. Data Governance
The use of databases enables organizations to (choose all that apply):

Entry field with correct answer
A. Minimize data security risks.
B. Minimize data isolation.
C. Eliminate data redundancy.
D. Eliminate data integrity.
E. Minimize data inconsistency.

A. Minimize data security risks
B. Minimize data isolation
E. Minimize data inconsistency
A data model is the diagrammatic representation of a database that clearly defines a database’s ___ , ____ and ____.

A. Entities, attributes, relationships.
B. Entity classes, hierarchy, files.
C. Data hierarchy, data attributes, data files.
D. Entity classes, entity attributes, entity files.

A. Entities, attributes, relationships.
A standardized language used to manipulate data is _____.

A. MS-Access
B. Oracle
C. Query-by-example language
D. None of these

C. Query-by-example language
_____ is a method for analyzing and reducing a relational database to its most streamlined form.

A. Structured query
B. Normalization
C. Query-by-example
D. Relational analysis

B. Normalization
Operational data that are constantly updated are stored in:

A. Data warehouses.
B. Data marts.
C. Databases.
D. All of these.

C. Databases
____ is the cumulative store of subjective or experiential learning.

A. Tacit knowledge
B. Explicit knowledge
C. Intellectual capital
D. None of these

A. Tacit Knowledge
_____ is a process that helps organizations identify, select, organize, disseminate, transfer, and apply expertise that is part of the organization’s memory and typically resides inside the organization in an unstructured manner.

A. Discovery
B. Knowledge management
C. Decision support
D. Data mining

B. Knowledge Management
It is very difficult to manage data for which of the following reasons?

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

A. Data are scattered throughout organizations.
When customers access a Web site and make purchases, they generate _____.

A. Web data
B. information
C. hyperlink data
D. clickstream data
E. tracking cookies

D. Clickstream data
Which of the following are ways for companies to leverage big data to gain value? (check all that apply)

A. Creating transparencies
B. Segmenting a population to customize actions
C. Analyzing less data
D. Reducing spending on technical initiatives
E. Providing automated algorithms to support decision making

A. Creating transparencies
B. Segmenting a population to customize actions
E. Providing automated algorithms to support decision making
In a relational database, the customer record contains information regarding the customer’s last name. The last name is a(n):

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

D. attribute
Place the following members of the data hierarchy in the correct order:

A. bit – byte – field – record – file – database
B. bit – record – field – byte – file – database
C. byte – bit – record – field – database
D. bit – byte – field – record – database – file
E. bit – field – byte – record – file – database

A. bit – byte – field – record – file – database
A(n) _____ is a logical grouping of related fields.

A. database
B. record
C. byte
D. field
E. file

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

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

E. uniquely identify a record
Data dictionaries perform all of the following functions except:

A. Providing information on each record
B. Defining the format necessary to enter data into the database
C. Providing information on why attributes are needed in the database
D. Providing information on how often attributes should be updated
E. Providing information on name of attributes

A. Providing information on each record.
A standardized language used to manipulate data is _____.

A. Oracle
B. query-by-example language
C. structured query language
D. data manipulation language
E. MS-Access

C. structured query language
_____ is a method for analyzing and reducing a relational database to its most streamlined form.

A. Structured query
B. Joining
C. Relational analysis
D. Normalization
E. Query by example

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

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

E. They are organized by subject.
Compared to data warehouses, data marts have which one of the following characteristics?

A. contain more information
B. cost less
C. are harder to navigate
D. have longer lead time for implementation
E. have central rather than local control

B. cost less
Which of the following is an example of explicit knowledge?

A. skill sets
B. procedural guides
C. experiences
D. expertise
E. insights

B. procedural guides
Explicit knowledge has which of the following characteristics?

A. objective
B. slow
C. costly to transfer
D. personal
E. ambiguous

A. objective
The most important benefit of knowledge management systems is:

A. improved morale.
B. retention of scarce knowledge if employees retire.
C. more efficient product development.
D. they make best practices available to employees.
E. improved customer service.

D. they make best practices available to employees

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