Deck 1: Database Systems

Question 1

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

Answer 1

False

Question 2

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

Answer 2

True

Question 3

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

Answer 3

False

Question 4

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

Question 5

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 6

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

Question 7

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

Question 8

A data warehouse can store data derived from many sources.

Question 9

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

Question 10

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

Question 11

Corporations use only structured data.

Question 12

Data and information are essentially the same thing.

Question 13

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

Question 14

Field refers to a collection of related records.

Question 15

Data constitute the building blocks of information.

Question 16

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

Question 17

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

Question 18

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

Question 19

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

Question 20

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 21

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

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

Question 22

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

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

Question 23

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 24

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

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

Question 25

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 26

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 27

Data warehouse contains historical data obtained from the .

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

Question 28

data exist in the format in which they were collected.

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

Question 29

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 30

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 31

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 32

Accurate, relevant, and timely information is the key to .

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

Question 33

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 34

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 35

A workgroup database is a(n) database.

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

Question 36

serve as the intermediary between the user and the database.

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

Question 37

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 38

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 39

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 40

A desktop database is a database.

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

Question 41

Most data that can be encountered are best classified as .

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

Question 42

Information is produced by processing .

Question 43

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

Question 44

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 45

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

Question 46

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 47

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 48

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

Question 49

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

Question 50

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

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

Question 51

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 52

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 53

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 54

To reveal meaning, information requires .

Question 55

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

Question 56

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

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

Question 57

A is a collection of related records.

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

Question 58

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 59

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

Question 60

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

Question 61

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

Question 62

Describe the five types of users identified in a database system.

Question 63

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.

Question 64

What are some reasons for studying file systems?

Question 65

What are the problems associated with file systems? How do they challenge the types of information that can be created from the data as well as the accuracy of the information?

Question 66

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

Question 67

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

Question 68

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

Question 69

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

Question 70

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

Question 71

What are the disadvantages of database systems?

Question 72

Discuss some considerations when designing a database.

Question 73

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

Question 74

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

Question 75

Discuss any three functions performed by the DBMS that guarantee the integrity and consistency of the data in the database.

Question 76

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