Download ExamView - Chap9-Hwk-and

Name: ________________________ Class: ___________________ Date: __________
ID: A
CS200-Chapter9-Homework
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. A(n) ____ is a collection of data organized in a manner that allows access, retrieval, and use of that data.
a. database
c. spreadsheet
b. server
d. webbase
____
2. ____ is a collection of unprocessed items, which can include text, numbers, images, audio, and video.
a. Integrity
c. Synthesis
b. Data
d. Information
____
3. A field ____ uniquely identifies each field.
a. tag
b. name
c.
d.
signal
basis
____
4. The field ____ defines the maximum number of characters a field can contain.
a. medium
c. size
b. scope
d. identifier
____
5. The data ____ specifies the kind of data a field can contain and how the field is used.
a. type
c. size
b. scope
d. identifier
____
6. In the accompanying figure, a data ____ is a collection of related records stored on a storage medium such as
a hard disk, CD, or DVD.
a. scope
c. segment
b. file
d. sector
1
Name: ________________________
ID: A
____
7. In a database file like the one shown in the accompanying figure, a(n) ____ key field uniquely identifies each
record in a file.
a. primary
c. foreign
b. secondary
d. tertiary
____
8. ____ is the process of comparing data with a set of rules or values to find out if the data is correct.
a. Concatenation
c. Digit checking
b. Validation
d. Integration
____
9. A(n) ____ check run on the data shown in the accompanying figure ensures that users enter only alphabetic
data into a field.
a. alphabetic
c. integration
b. range
d. integrity
____ 10. A(n) ____ check run on the data shown in the accompanying figure determines whether a number is within a
specified range.
a. range
c. insertion
b. index
d. integer
____ 11. A(n) ____ digit is a number(s) or character(s) that is appended to or inserted in a primary key value.
a. check
c. insertion
b. index
d. integer
2
Name: ________________________
ID: A
____ 12. In a typical file ____ system, each department or area within an organization has its own set of files.
a. synthesis
c. analysis
b. processing
d. integration
____ 13. When a company uses a(n) ____, many programs and users share the data in a database.
a. front-end
c. database
b. concatenated
d. memory-based
____ 14. Which of the following statements is not true of file processing systems?
a. the records in one file relate to the records in other files
b. they have redundant data
c. they isolate data
d. maintenance tasks consume additional time
____ 15. Which statement does not apply to the database approach?
a. it requires less memory than file processing systems
b. it increases the data’s integrity
c. programs are easier and faster to develop than with a file processing system
d. it allows nontechnical users to access and maintain data
____ 16. Which of the following DBMSs will run only on a server or mainframe?
a. Adabas
c. Access
b. SQL Server
d. ObjectStore
____ 17. A data ____ contains data about each file in the database and each field within those files.
a. log
c. model
b. warehouse
d. dictionary
____ 18. A ____ consists of simple, English-like statements that allow users to specify the data to display, print, or
store.
a. query language
c. form
b. query-by-example
d. report generator
____ 19. A(n) ____ is a request for specific data from the database.
a. capture
c. form
b. report
d. query
____ 20. Most DBMSs include a(n) ____ feature, like the one in the accompanying figure, which has a graphical user
interface to assist users with retrieving data.
a. QBE
c. QBA
b. MTA
d. SQL
____ 21. A(n) ____ is a window on the screen that provides areas for entering or changing data in a database.
a. analog
c. report
b. form
d. backup
3
Name: ________________________
ID: A
____ 22. A ____ allows users to design a report on the screen, retrieve data into the report design, and then display or
print the report like the one shown in the accompanying figure.
a. query form
c. report table
b. report generator
d. recovery utility
____ 23. ____ backup is a backup plan in which all data is backed up whenever a change is made.
a. Ongoing
c. Continuous
b. Integrated
d. Complex
____ 24. More complex DBMSs maintain a(n) ____, which is a listing of activities that change the contents of the
database.
a. report
c. glossary
b. index
d. log
____ 25. A DBMS that creates a log usually provides a(n) ____.
a. validity check
c. backup
b. integrity check
d. recovery utility
____ 26. A(n) ____ uses the logs and/or backups to restore a database when it becomes damaged or destroyed.
a. redundancy
c. recovery
b. reboot
d. refresh
____ 27. A(n) ____ model consists of rules and standards that define how the database organizes data.
a. standards
c. rules-based
b. data
d. object-relational
____ 28. A(n) ____ database stores data in tables that consist of rows and columns.
a. relational
c. object-oriented
b. hierarchical
d. multidimensional
____ 29. A developer of a relational database refers to a file as a(n) ____.
a. integration
c. standard
b. tuple
d. relation
4
Name: ________________________
ID: A
____ 30. A(n) ____ is a connection within the data in a database.
a. table
c. row
b. column
d. relationship
____ 31. A developer of a relational database refers to a file as a(n) ____.
a. tuple
c. attribute
b. table
d. relation
____ 32. A developer of a relational database refers to a field as a(n) ____.
a. unit
c. tuple
b. attribute
d. table
____ 33. A user of a relational database refers to a file as a(n) ____.
a. unit
c. table
b. attribute
d. tuple
____ 34. A user of a relational database refers to a record as a(n) ____.
a. unit
c. column
b. tuple
d. row
____ 35. ____ is a query language, an example of which is shown in the accompanying figure, that allows users to
manage, update, and retrieve data.
a. SQL
c. XML
b. QBE
d. QBA
____ 36. A(n) ____ is an item that contains data, as well as the actions that read or process the data.
a. unit
c. index
b. object
d. key
____ 37. A(n) ____ is a database that stores data in objects.
a. QBA
c.
b. SQL
d.
OODB
QBE
____ 38. A data ____ is a huge database that stores and manages the data required to analyze historical and current
transactions.
a. stockyard
c. storehouse
b. warehouse
d. storage unit
____ 39. A database ____ decides on the proper placement of fields, defines the relationship among data, and identifies
users’ access privileges.
a. administrator
c. analyst
b. manager
d. leader
5
Name: ________________________
____ 40. A database administrator _____.
a. requires a more technical view of data
b. creates and maintains the data dictionary
ID: A
c.
d.
monitors the performance of the database
all of the above
True/False
Indicate whether the statement is true or false.
____ 41. Accurate information is error free.
____ 42. Most information is important only to certain people or groups of people.
____ 43. A database uses characteristics such as field size and data type to define each field.
____ 44. Each record in a file like the one in the accompanying figure contains the same fields, but each field contains
different data.
____ 45. One reason users change a record in a file like the one in the accompanying figure is to update old data with
new data.
____ 46. A flagged record is deleted physically, meaning that the program will not process it.
6
Name: ________________________
ID: A
____ 47. Validity checks like those performed on the data in the accompanying figure increase data entry errors.
____ 48. An alphabetic check performed on the data in the accompanying figure would ensure that users enter only
alphabetic or numeric data into a field.
____ 49. A check digit cannot be used to confirm the accuracy of a primary key value.
____ 50. Sharing data from multiple, separate files is complicated and usually requires the experience of a computer
programmer.
____ 51. Data redundancy in a data storage system always decreases the chance of errors.
____ 52. When users modify data in a database using the database approach, they must make changes to all files
instead of just one file.
____ 53. The data in a database usually is shared over a network by the entire organization.
____ 54. Companies that use databases do not require security settings for access control.
____ 55. Databases require more processing power than file processing systems.
7
Name: ________________________
ID: A
____ 56. Data in file processing systems is more vulnerable than data in a database.
____ 57. A database can store a lot of data in a single file.
____ 58. A person must be trained in programming languages to learn a query language.
____ 59. Most DBMSs allow different levels of access privileges to be identified for each field in the database.
____ 60. A data model defines how the operating system actually arranges the data on the disk.
____ 61. A user of a relational database refers to a record as a column.
____ 62. All object-oriented databases support object query language (OQL).
____ 63. A smaller version of a data warehouse is a data mart, which contains a database that helps a specific group or
department make decisions.
____ 64. A Web database usually resides on a database server.
____ 65. The maintenance of a database is an ongoing task that companies measure constantly against overall goals.
8