Database Management Ch. 1

Data is said to be verifiable if

the data always yields consistent results.

Which of the following refers to the situation where different versions of the same data are stored at different places because they weren’t updated consistently?

Data redundancy

One advantage of a database system over previous data management approaches is that the database system is considerably less complex.

False

The database structure in a DBMS is stored as a _

collection of files

_ serve as the intermediary between the user and the database.

DBMSs

"The term _ refers to an organization of components that define and regulate the collection

storage

Corporations use only structured data.

False

Metadata describe the data characteristics and the set of relationships that links the data found within the database.

True

The organization of data within folders in a manual file system is determined by _.

its expected use

Structure is based on the type of processing to be performed on the data.

True

"A _ is a logically connected set of one or more fields that describes a person

place

The only way to access the data in a database is through the DBMS.

False

A(n) _ might be written by a programmer or it might be created through a DBMS utility program.

application

Field refers to a collection of related records.

False

A(n) _ database is used by an organization and supports many users across many departments.

enterprise

One disadvantage of a database system over previous data management approaches is increased costs.

True

An advantage of database systems is that you needn't perform frequent updates and apply latest patches.

False

_ relates to the activities that make the database execute transactions more efficiently in terms of storage and access speed.

Performance tuning

Data processing can be as simple as organizing data to reveal patterns.

True

A data warehouse contains historical data obtained from the _

operational databases

A workgroup database is a(n) _ database.

Multiuser

Data anomaly is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions.

False

"When data are entered into a form and saved

they are placed in the underlying database as knowledge."

_ data exist in a format that does not lend itself to processing that yields information.

Unstructured

_ provide a description of the data characteristics and the set of relationships that link the data found within the database.

Metadata

Most data that can be encountered are best classified as _

structured

Data and information are essentially the same thing.

False

The only way to access the data in a database is through the DBMS.

True

A _ is a character or group of characters that has a specific meaning.

Field

The response of the DBMS to a query is the ___

Query result set

An XML database supports the storage and management of _ XML data.

Semistructured

End-user data is _

Raw facts of interest to the end user

data exist in the format in which they were collected

historical