Database Management Quiz #1

a(n) ___ is a collection of programs that manages the database structure and controls access to the data stored in the data.

DBMS (database management system)

___ is a special language used to represent and manipulate data elements in a textual format.

XML (extensible markup language)

___ serve as the intermediary between the user and the database. a. DBMS b. metadata c. end user data d. programming languages

a. DBMS

___ exists when different versions of the same data appear in different places. a. data inconsistency b. poor data security c. structural dependence d. conceptual dependence

a. data inconsistency

___ is defined as the condition in which all of the data in the database are consistent with the real world events and conditions. a. data integrity b. data anomaly c. data ubiquity d. data quality

a. data integrity

data warehouse contains historical data obtained from the ___. a. operational database b. desktop database c. enterprise databases d. workgroup database

a. operation database

___ relates to the activities that make the database execute transactions more efficiently in terms of storage and access speed. a. performance tuning b. database design c. query access d. database management

a. performance tuning

a desktop database is a ___ database. a. single user b. multi user c. workgroup d. distributed

a. single user

___ are the result of formatting disorganized data in order to facilitate storage, use and generation of information. a. structured data b. raw data c. unstructured data d. obsolete data

a. structured data

data is said to be verifiable if: a. the data always yields consistent results b. the data cannot be changed or manipulated c. the data is obtained from trusted sources d. the data is stored in different places within the database

a. the data always yields consistent results

a(n) ___ is a spur of the moment question

ad hoc query

___ databases focus primarily on storing data used to generate information required to make tactical or strategic decisions.

analytical

the database structure in a DBMS is stored as a ___. a. single file b. collection of files c. set of key/value pairs d. collection of queries

b. collection of files

a ___ is a character or group of characters that has a specific meaning. a. database b. field c. record d. file

b. field

accurate, relevant and timely information is key to ___. a. data management b. good decision making c. knowledge d. understanding

b. good decision making

the organization of data within folders in a manual file system is determined by ___. a. its data of creation b. its expected use c. the title of documents in the folder d. the data processing specialist

b. its expected use

a workgroup database is a(n) ___ database. a. single user b. multiuser c. desktop d. distributed

b. multiuser

end user data is ___. a. knowledge about the end users b. raw facts of interest to the end user c. information about a specific subject d. accurate, relevant and timely information

b. raw facts of interest to the end user

most data that can be encountered are best classified as ___. a. structured b. semistructured c. unstructured d. historical

b. semistructured

a(n) ___ database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization. a. desktop b. workgroup c. enterprise d. transactional

b. workgroup

a(n) ___ database is used by an organization and supports many users across many departments. a. desktop b. workgroup c. enterprise d. transactional

c. enterprise

___ is the body of information and facts about a specific subject. a. validation b. a format c. knowledge d. a database

c. knowledge

___ provide a description of the data characteristics and the set of relationships that link the data found within the database. a. queries b. end user data c. metadata d. schemas

c. metadata

the response of the DBMS to a query is the ___. a. ad hoc query b. ad hoc response c. query result set d. integrated view of the data

c. query result set

a ___ is a logically connected set of one or more fields that describes a person, place, or thing. a. database b. column c. record d. file

c. record

___ data exist in a format that does not lend itself to processing that yields information. a. structured b. semistructured c. unstructured d. historical

c. unstructured

___ data exist in the format in which they were collected. a. structured b. semistructured c. unstructured d. historical

c. unstructured

to reveal meaning, information requires ___

context

a(n) ___ might be written by a programmer or it might be created through a DBMS utility program. a. query b. operating system c. database management system d. application

d. application

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? a. data query b. data integrity c. data dictionary d. data redundancy

d. data redundancy

the term ___ refers to an organization of components that define and regulate the collection, storage, management and use of data within a database environment. a. structured data b. transaction c. management system d. database system

d. database system

a ___ is a collection of related records a. schema b. field c. column d. file

d. file

___ refer to a type of database that stores most of its data in RAM rather than in hard disks. a. integrated databases b. cloud databases c. desktop databases d. in memory databases

d. in memory databases

___ is the result of revealing the meaning of raw facts. a. end user data b. an encoded sample c. an encrypted bit d. information

d. information

an XML database supports the storage and management of ___ XML data. a. structured b. multi structured c. fully structured d. semi structured

d. semistructured

which of the following is true of spreadsheet applications? a. they provide enhanced security and robust data sharing features b. they do not allow manipulation of data once entered c. they are a better alternative to databases d. they enhance the user's ability to understand the data

d. they enhance the user's ability to understand the data

information is produced by processing ___.

data

a(n) ___ develops when all required changes in the redundant data are not made successfully.

data anomaly

The DBMS uses the ___ to look up the required data component structures and relationships, thus relieving programmers from having to code such complex relationships in each program.

data dictionary

___ exists when different and conflicting versions of the same data appear in different places.

data inconsistency.

___ exists when it is possible to make changes in the data storage characteristics without affecting an application programs ability to access data.

data independence

___ exists when the same data are stored unnecessarily at different places.

data redundancy

Data and information are essentially the same thing. (t/f)

false

an advantage of database system is that you needn't perform frequent updates and apply latest patches. (t/f)

false

an operational database is sometimes referred to as an enterprise database. (t/f)

false

corporations use only structured data. (t/f)

false

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. (t/f)

false

data is the result of processing raw facts to reveal its meaning. (t/f)

false

database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests. (t/f)

false

field refers to a collection of related records. (t/f)

false

one advantage of a database system over previous data management approaches is that the database system is considerably less complex. (t/f)

false

one disadvantage of the DBMS is that it increases the risk of data security breaches. (t/f)

false

structural dependence exists when it is possible to make changes in the file structure without affecting the application program's ability to access the data. (t/f)

false

the DBMS reveals much of the database's internal complexity to the application program and users. (t/f)

false

when data are entered into a form and saved, they are placed in the underlying database as knowledge. (t/f)

false

raw data must be properly ___ for storage, processing and presentation.

formatted

___ is the result of processing raw data to reveal its meaning

information

the term ___ refers to scattered locations storing the same basic data.

islands of information

___ is data about data through which the end user data are integrated and managed.

metadata

___ relates to activities that make a database operate more efficiently in terms of storage and access speed.

performance tuning

a(n) ___ is a specific request issued to the DBMS for data manipulation.

query

a data warehouse can store data derived from many sources. (t/f)

true

data constitute the building blocks of information. (t/f)

true

data processing can be as simple as organizing data to reveal patterns. (t/f)

true

metadata describes the data characteristics and the set of relationships that links the data found within the database. (t/f)

true

one disadvantage of a database system over previous data management approaches is increased costs. (t/f)

true

the only way to access the data in a database is through the DBMS. (t/f)

true

the same data might be simultaneously structured and unstructured depending on the intended processing. (t/f)

true