PRELIM CHAPTER 1 Flashcards
Good decisions require good information
derived from ___________
social media
internet
raw facts
ideas
raw facts
Data is managed most efficiently when
stored in a __________
database
(T or F) Databases evolved from computer file
systems
T
Databases are used in almost all modern settings
involving data management (3):
- Business
- Research
- Administration
( T or F) Databases solve many of the problems
encountered in data management
T
__________ solve many of the problems
encountered in data management
databases
(T or F) Information is raw, unorganized facts that need to be processed
F
Data
___________ is the data processed, organized, structured, or presented in a given context so as to make it useful.
Information
A _________ is a shared, integrated computer structure that stores a collection of end-user data and metadata
database
Databases store a collection of ___________ and ____________
Metadata
Information
programs
end-user data
End-user data
Metadata
__________ - raw facts of interest to end
user
end- user data
- data about data
- Provides description of data characteristics and relationships in data
- Complements and expands value of data
Metadata
DBMS means?
Database management systems
__________ manages structure and controls access to
data
DBMS
(T or F) DBMS prevents data to be shared
F
it enables data to be shared
(T or F) DBMS is the intermediary between the user and
the database
T
Advantages of a DBMS (7):
*Improved data sharing
*Improved data security
*Better data integration
*Minimized data inconsistency
*Improved data access
*Improved decision making
*Increased end-user productivity
Databases can be classified according to (3):
- Number of users
- Database location(s)
- Expected type and extent of use
Types of databases(10):
- single- user databases
- multi-user databases
- centralized databases
- distributed databases
- operational databases
- data warehouse
- unstructured data
- structured data
- semistructured data
- extensible markup language XML
(T or F) XML database supports unstructured XML
data
F
semistructured
_______________ supports only one user at a time
- single- user databases
- multi-user databases
- centralized databases
- distributed databases
single- user databases
_______________ supports multiple users at the same time
- single- user databases
- multi-user databases
- semistructured data
- extensible markup language XML
multi-user databases
_______________ data located at a single site
- distributed databases
- data warehouse
- unstructured data
- centralized databases
centralized databases
_______________ data distributed across
several different sites
- distributed databases
- data warehouse
- multi-user databases
- semistructured data
distributed databases
_______________ supports a company’s day-to-day operations
- distributed databases
- operational databases
- data warehouse
- unstructured data
operational databases
_______________ stores data used for tactical or strategic decisions
- distributed databases
- operational databases
- data warehouse
- unstructured data
data warehouse
_______________ stores data used for tactical or strategic decisions
- unstructured data
- structured data
- semistructured data
- extensible markup language XML
unstructured databases
_______________ have been processed to some extent
- unstructured data
- structured data
- semistructured data
- extensible markup language XML
semistructured data
_______________ result from formatting, applied based on the type of processing to be performed
- unstructured data
- structured data
- semistructured data
- extensible markup language XML
structured data
is data about data
Metadata
define the data characteristics
such as the data type (such as character or numeric) and the relationships that link the data.
metadata
are an important component of database design
Relationships