Quiz 1
A ___ is a collection of programs that ranges the database structure and controls access to the data stored in the database.
DBMS
_____ serve as the intermediary between the user and the database.
DBMSs
_____ refer to a type of database that stores most of its data in RAM rather than in hard disks.
In-memory databases
__ is data about data through which the end-user data are integrated and managed.
Metadata
_____ relates to the activities that make the database execute transactions more efficiently in terms of storage and access speed.
Performance tuning
Which of the following is true of spreadsheet applications?
They enhance the user's ability to understand the data.
____ data exist in a format that does not lend itself to processing that yields information.
Unstructured
____ data exist in the format in which they were collected.
Unstructured
A ___ might be written by a programmer or it might be created through a DBMS utility program.
application
The database structure in a DBMS is stored as a ____.
collection of files
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 versions of the same data appear in different places.
data inconsistency
____________________ exists when different and conflicting versions of the same data appear in different places.
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.
data integrity
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
____________________ exists when the same data are stored unnecessarily at different places.
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.
database system
A ____database is used by an organization and supports many users across many departments.
enterprise
A ____ is a character or group of characters that has a specific meaning
field
A ____ is a collection of related records
file
Raw data must be properly ____________________ for storage, processing and presentation.
formatted
Accurate, relevant, and timely information is the key to ___.
good decision making
____ is the result of processing raw data to reveal its meaning
information
____ is the result of revealing the meaning of raw facts
information
The term ___ refers to scattered locations storing the same basic data.
islands of information
The organization of data within folders in a manual file system is determined by _____.
its expected use
____ is the body of information and facts about a specific subject
knowledge
____ provide a description of the data characteristics and the set of relationships that link the data found within the database.
metadata
A workgroup database is a(n) ___ database.
multiuser
Data warehouse contains historical data obtained from the ____
operational database
A ___ is a specific request issued to the DBMS for data manipulation.
query
The response of the DBMS to a query is the ____.
query result set
End-user data is _____.
raw facts of interest to the end user
A ___ is a logically connected set of one or more fields that describes a person, place, or thing.
record
An XML database supports the storage and management of _____ XML data.
semistructured
Most data that can be encountered are best classified as _____
semistructured
A desktop database is a ___ database.
single-user
____ are the result of formatting disorganized data in order to facilitate storage, use and generation of information.
structured data
Data is said to be verifiable if:
the data always yields consistent results.
A(n) ____ database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization.
workgroup
