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The Database Environment(Engineering > Computer Science And Engineering > Database System ) Questions and Answers
Home
Topic
Engineering
Computer Science And Engineering
Database System
The Database Environment
Question 1.
A data warehouse uses:
partial operational data.
historical operational data.
health care data.
future operational data.
Explanation:-
Answer: Option B. ->
historical operational data.
Question 2.
Metadata enables database designers and users to do all of the following except:
understand what data exist.
what the data mean.
sample data.
what the fine distinctions are between similar data items.
Explanation:-
Answer: Option C. ->
sample data.
Question 3.
A database management system (DBMS) is a:
software system used to create, maintain, and provide controlled access to a database.
hardware system used to create, maintain, and provide uncontrolled access to a database.
hardware system used to create, maintain, and provide controlled access to a database.
software system used to create, maintain, and provide uncontrolled access to a database.
Explanation:-
Answer: Option A. ->
software system used to create, maintain, and provide controlled access to a database.
Question 4.
Legacy data is which of the following?
Data contained in a newly-installed system
Data contained by a system used prior to the installation of a new system
Data contained in a file system
Data rejected during the installation of a new system
Explanation:-
Answer: Option B. ->
Data contained by a system used prior to the installation of a new system
Question 5.
Duplicate data often results in loss of data integrity because:
data values may not agree.
Both A &
Neither A &
the data formats may be inconsistent.
Explanation:-
Answer: Option B. ->
Both A &
Question 6.
A database application can perform which of the following activities?
Update records
All of these
Read records
Add records
Explanation:-
Answer: Option B. ->
All of these
Question 7.
Data administrators are responsible for:
writing application programs.
overall management of data resources in an organization.
physical database design.
managing technical issues in the database environment.
Explanation:-
Answer: Option B. ->
overall management of data resources in an organization.
Question 8.
A shared database should:
be accurate and available.
All of these
provide for backup and recovery.
be secure.
Explanation:-
Answer: Option B. ->
All of these
Question 9.
An enterprise data model is:
a graphical model that shows the high-level entities for an organization.
a non-graphical model that shows the all entities for an organization.
a graphical model that shows all entities for an organization.
a non-graphical model that shows the high-level entities for an organization.
Explanation:-
Answer: Option A. ->
a graphical model that shows the high-level entities for an organization.
Question 10.
Which of the following types of databases are the most common?
Department
Personal
Enterprise
Workgroup
Explanation:-
Answer: Option A. ->
Department
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