The Database Environment - General Questions (2)

9.

An enterprise data model is:

A.	a graphical model that shows the high-level entities for an organization.
B.	a graphical model that shows all entities for an organization.
C.	a non-graphical model that shows the high-level entities for an organization.
D.	a non-graphical model that shows the all entities for an organization.

Answer: Option A

Explanation:

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10.

A database application can perform which of the following activities?

A.	Add records
B.	Read records
C.	Update records
D.	All of the above.

Answer: Option D

Explanation:

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11.

A database management system (DBMS) is a:

A.	hardware system used to create, maintain, and provide controlled access to a database.
B.	hardware system used to create, maintain, and provide uncontrolled access to a database.
C.	software system used to create, maintain, and provide controlled access to a database.
D.	software system used to create, maintain, and provide uncontrolled access to a database.

Answer: Option C

Explanation:

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12.

Legacy data is which of the following?

A.	Data contained in a newly-installed system
B.	Data rejected during the installation of a new system
C.	Data contained in a file system
D.	Data contained by a system used prior to the installation of a new system

Answer: Option D

Explanation:

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13.

Duplicate data often results in loss of data integrity because:

A.	the data formats may be inconsistent.
B.	data values may not agree.
C.	Both A & B.
D.	Neither A & B.

Answer: Option C

Explanation:

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14.

Metadata enables database designers and users to do all of the following except:

A.	sample data.
B.	understand what data exist.
C.	what the fine distinctions are between similar data items.
D.	what the data mean.

Answer: Option A

Explanation:

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15.

A data warehouse uses:

A.	partial operational data.
B.	historical operational data.
C.	future operational data.
D.	health care data.

Answer: Option B

Explanation:

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