C175- Lesson 1 - Intro to Databases, Information and Data Quiz
___________________ databases focus primarily on storing data used to generate information required to make tactical or strategic decisions.
Analytical
A(n)___________________is a collection of programs that manages the database structure and controls access to the data stored in the database.
DBMS (database management system)
Data constitute the building blocks of information. True or False
True
To reveal meaning, information requires _________________.
context
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 _____. A. its date of creation B. its expected use C. the title of the documents in the folder D. the data processing specialist
its expected use
______ 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
metadata
A workgroup database is a(n) _____ database. A. single-user B. multiuser C. desktop D. distributed
multiuser
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.
the data always yields consistent results.
A data warehouse can store data derived from many sources. T/F
true
Metadata describe the data characteristics and the set of relationships that links the data found within the database. 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
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
workgroup
_____ serve as the intermediary between the user and the database. A. DBMSs B. Metadata C. End-user data D. Programming languages
DBMSs
______________exists when different and conflicting versions of the same data appear in different places.
Data Redundancy
_____ 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
Data inconsistency
_______________ exists when it is possible to make changes in the data storage characteristics without affecting an application program's ability to access data.
Data independence
_____ 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
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? A. Data query B. Data integrity C. Data dictionary D. Data redundancy
Data redundancy
______________ exists when the same data are stored unnecessarily at different places.
Data redundancy
An advantage of database systems is that you needn't perform frequent updates and apply latest patches. T/F
False
Data and information are essentially the same thing. True or False
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. True or False
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
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
_____ 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
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
Information
__________ is the result of processing raw data to reveal its meaning.
Information
_____ is the body of information and facts about a specific subject. A. Validation B. A format C. Knowledge D. A database
Knowledge
______________ 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. A. Performance Tuning B. Database Design C. Query access D. Database management
Performance Tuning
__________________ relates to activities that make a database operate more efficiently in terms of storage and access speed.
Performance Tuning
Most data that can be encountered are best classified as _____ . A. Structured B. Semistructured C. Unstructured D. Historical
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.
They enhance the user's ability to understand the data.
Data processing cane be as simple as organizing data to reveal patterns. True or False
True
One disadvantage of a database system over previous data management approaches is increased costs. T/F
True
_____ data exist in a format that does not lend itself to processing that yields information. A. Structured B. Semistructured C. Unstructured D. Historical
Unstructured
_____ data exist in the format in which they were collected. A. Structured B. Semistructured C. Unstructured D. Historical
Unstructured
_________________ is a special language used to represent and manipulate data elements in a textual format.
XML,Extensible Markup Language
A(n) _____________________ is a spur-of-the-moment question.
ad hoc query
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
application
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
collection of files
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
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
database system
A(n) ______ database is used by an organization and supports many users across many departments. A. desktop B. workgroup C. enterprise D. transactional
enterprise
An operational database is sometimes referred to as an enterprise database. T/F
false
Corporations use only structured data. 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
One disadvantage of the DBMS is that it increases the risk of data security breaches. T/F
false
The DBMS reveals much of the database's internal complexity to the application programs and users. T/F
false
A _____ is a character or group of characters that has a specific meaning. A. database B. field C. record D. file
field
A _____ is a collection of related records. A. schema B. field C. column D. file
file
Raw data must be properly ____________________________ for storage, processing and presentation.
formatted
Accurate, relevant, and timely information is the key to _______. A. data management B. good decision making C. knowledge D. understanding
good decision making
Data warehouse contains historical data obtained from the_____. A. operational databases B. desktop database C. enterprise databases D. workgroup databases
operational databases
A(n) ___________________________ is a specific request issued to the DBMS for data manipulation.
query
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
query result set
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
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. A. database B. column C. record D. file
record
An XML database supports the storage and management of _____ XML data. A. structured B. multistructured C. fullystructured D. semistructured
semistructured
A desktop database is a _____ database. A. single-user B. multiuser C. workgroup D. distributed
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
structured data