Deck 1: Database Systems

Question 1

An operational database is sometimes referred to as an enterprise database.

Answer 1

False

Question 2

The only way to access the data in a database is through the DBMS.

Answer 2

True

Question 3

One disadvantage of a database system over previous data management approaches is increased costs.

Answer 3

True

Question 4

Corporations use only structured data.

Question 5

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.

Question 6

Field refers to a collection of related records.

Question 7

Data constitute the building blocks of information.

Question 8

Data and information are essentially the same thing.

Question 9

Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests.

Question 10

Data is the result of processing raw facts to reveal its meaning.

Question 11

One disadvantage of the DBMS is that it increases the risk of data security breaches.

Question 12

The DBMS reveals much of the database's internal complexity to the application programs and users.

Question 13

One advantage of a database system over previous data management approaches is that the database system is considerably less complex.

Question 14

Metadata describe the data characteristics and the set of relationships that links the data found within the database.

Question 15

When data are entered into a form and saved,they are placed in the underlying database as knowledge.

Question 16

An advantage of database systems is that you needn't perform frequent updates and apply latest patches.

Question 17

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.

Question 18

The same data might be simultaneously structured and unstructured depending on the intended processing.

Question 19

A data warehouse can store data derived from many sources.

Question 20

Data processing can be as simple as organizing data to reveal patterns.

Question 21

__ _ serve as the intermediary between the user and the database.

A)DBMSs
B)Metadata
C)End-user data
D)Programming languages

Question 22

A workgroup database is a(n)database.

A)single-user
B)multiuser
C)desktop
D)distributed

Question 23

__ __ 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

Question 24

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

Question 25

A(n)database is used by an organization and supports many users across many departments.

A)desktop
B)workgroup
C)enterprise
D)transactional

Question 26

___ data exist in a format that does not lend itself to processing that yields information.

A)Structured
B)Semistructured
C)Unstructured
D)Historical

Question 27

___ 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

Question 28

data exist in the format in which they were collected.

A)Structured
B)Semistructured
C)Unstructured
D)Historical

Question 29

_ ___ is the body of information and facts about a specific subject.

A)Validation
B)A format
C)Knowledge
D)A database

Question 30

Data warehouse contains historical data obtained from the .

A)operational databases
B)desktop database
C)enterprise databases
D)workgroup databases

Question 31

_ _ is the result of revealing the meaning of raw facts.

A)End-user data
B)An encoded sample
C)An encrypted bit
D)Information

Question 32

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

Question 33

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

Question 34

__ 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

Question 35

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

Question 36

An XML database supports the storage and management of XML data.

A)structured
B)multistructured
C)fully structured
D)semistructured

Question 37

Most data that can be encountered are best classified as .

A)structured
B)semistructured
C)unstructured
D)historical

Question 38

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

Question 39

A desktop database is a database.

A)single-user
B)multiuser
C)workgroup
D)distributed

Question 40

Accurate,relevant,and timely information is the key to

A)data management
B)good decision making
C)knowledge
D)understanding

Question 41

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

Question 42

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

Question 43

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

Question 44

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

Question 45

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

Question 46

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

Question 47

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.

Question 48

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

Question 49

Information is produced by processing

Question 50

To reveal meaning,information requires .

Question 51

Raw data must be properly for storage,processing and presentation.

Question 52

______ 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

Question 53

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

Question 54

A is a character or group of characters that has a specific meaning.

A)database
B)field
C)record
D)file

Question 55

Which of the following is true of spreadsheet applications?

A)They provide enhanced security and robust data sharing
B)They do not allow manipulation of data features.once entered.
C)They are a better alternative to databases.
D)They enhance the user's ability to understand the data.

Question 56

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

Question 57

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

Question 58

A(n)is a spur-of-the-moment question.

Question 59

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

Question 60

A is a collection of related records.

A)schema
B)field
C)column
D)file

Question 61

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

Question 62

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

Question 63

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

Question 64

Discuss some considerations when designing a database.

Question 65

Describe what metadata are and what value they provide to the database system.

Question 66

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

Question 67

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

Question 68

What are the advantages of having the DBMS between the end user's applications and the database?

Question 69

What are some reasons for studying file systems?

Question 70

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

Question 71

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

Question 72

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.