DBC – Flashcard
Unlock all answers in this set
Unlock answersquestion
Data and information are essentially the same thing
answer
FALSE
question
Data processing can be as simple as organizing data to reveal patters
answer
TRUE
question
Data is the result of processing raw facts to reveal its meaning
answer
FALSE
question
When data are entered into a form and saved, they are placed in the underlying database as knowledge
answer
FALSE
question
Data constitute the building blocks of information
answer
TRUE
question
Metadata describe the data characteristics and the set of relationships that links the data found within the databse
answer
TRUE
question
The only way to access the data in a database is through the DBMS
answer
TRUE
question
Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests
answer
FALSE
question
The DBMS reveals as much of the database's internal complexity to the application programs and users
answer
FALSE
question
One disadvantage of the DBMS is that it increases the risk of data security breaches
answer
FALSE
question
An operation database is sometimes referred to as an enterprise database
answer
FALSE
question
A data warehouse can store data derived from many sources
answer
TRUE
question
The same data might be simultaneously structured and unstructured depending on the intended processing
answer
TRUE
question
Corporations use only structured data
answer
FALSE
question
Field refers to a collection of related records
answer
FALSE
question
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
answer
FALSE
question
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
answer
FALSE
question
An advantage of database systems is that you needn't perform frequent updates and apply latest patches
answer
FALSE
question
One disadvantage of a database system over previous data management approaches is increased costs
answer
TRUE
question
One advantage of a database system over previous data management approaches is that the database system is considerably less complex
answer
FALSE
question
____ is the result of revealing the meaning of raw facts
answer
End-user data
question
____ is the body of information and facts about a specific subject
answer
Knowledge
question
Accurate, relevant, and timely information is the key to _____
answer
good decision making
question
End-user data is ____
answer
raw facts of interest to the end user
question
____ provide a description of the data characteristics and the set of relationships that link the data found within the database
answer
metadata
question
____ serve as the intermediary between the user and the database
answer
DBMS
question
The database structure in a DBMS is stored as a
answer
collection of files
question
An _____ might be written by a programmer or it might be created through a DBMS utility program
answer
application
question
_____ exists when different versions of the same data appear in different places
answer
data inconsistency
question
_____ refer to a type of database that stores most of its data in RAM rather than in hard disks
answer
in-memory databases
question
The response of the DBMS to a query is the ____
answer
query result set
question
An ____ database is used by an organization and supports many users across many departments
answer
enterprise
question
A _____ database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization
answer
workgroup
question
A workgroup database is a ____ database
answer
multiuser
question
____ is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions
answer
data integrity
question
A desktop database is a ____ database
answer
single user
question
Data warehouse contains historical data obtained from the _____
answer
operational databases
question
Data is said to be verifiable if
answer
the data always yields consistent results
question
____ data exist in the format in which they were collected
answer
Unstructured
question
____ data exists in a format that does not lend itself to processing that yields information
answer
unstructured
question
_____ are the result of formatting disorganized data in order to facilitate storage, use and generation of information
answer
structured data
question
Most data that can be encountered are best classified as ____
answer
semistructured
question
Which of the following is true of spreadsheet applications?
answer
They enhance the user's ability to understand the data
question
An XML database supports the storage and management of ____ XML data
answer
semistructured
question
The organization of data within folders in a manual file system is determined by ____
answer
its expected use
question
A ____ is a logically connected set of one or more fields that describes a person, place, or thing
answer
record
question
A ____ is a collection of related records
answer
file
question
A ____ is a character or group of characters that has a specific meaning
answer
field
question
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?
answer
data redundancy
question
The term ____ refers to an organization of components that define and regulate the collection, storage, management and use of data within a database environment
answer
database system
question
____ relates to the activities that make the database execute transactions more efficiently in terms of storage and access speed.
answer
performance tuning
question
____ is the result of processing raw data to reveal its meaning
answer
information
question
To reveal meaning, information requires ____
answer
context
question
Raw data must be properly ____ for storage, processing, and presentation
answer
formatted
question
Information is produced by processing ____
answer
data
question
____ is data about data through which the end-user data are integrated and managed
answer
metadata
question
A ____ database is a collection of programs that manages the database structure and controls access to the data stored in the database
answer
DBMS
question
A ___ is a specific request issued to the DBMS for data manipulation
answer
query
question
____ databases focus primarily on storing data used to generate information required to make tactical or strategic decisions
answer
analytical
question
___ is a special language used to represent and manipulate data elements in a textual format
answer
XML (extensible markup language)
question
An ____ is a spur-of-the-moment question
answer
ad hoc query
question
____ exists when it is possible to make changes in the data storage characteristics without affecting an application program's ability to access data
answer
data independence
question
The term ____ refers to scattered locations storing the same basic data
answer
islands of information
question
____ exists when different and conflicting versions of the same data appear in different places
answer
data inconsistency
question
___ exists when the same data are stored unnecessarily at different places
answer
data redundancy
question
A(n) ___ develops when all required changes in the redundant data are not made successfully
answer
data anomaly
question
The DBMS uses the _____ to look up the required data component structures and relationship,s thus relieving programmers form having to code such complex relationships in each program
answer
data dictionary
question
___ relates to activities that make a database operate mroe efficiently in terms of storage and access space
answer
performance turning
