CHAPTER 1: DATABASE SYSTEMS
1. Data and information are essentially the same thing.
a. True
b. False
2. Data processing can be as simple as organizing data to reveal patterns.
a. True
b. False
3. Data is the result of processing raw facts to reveal its meaning.
a. True
b. False
4. When data are entered into a form and saved, they are placed in the underlying database as knowledge.
a. True
b. False
5. Data constitute the building blocks of information.
a. True
b. False
6. Metadata describe the data characteristics and the set of relationships that links the data found within the
database.
a. True
b. False
7. The only way to access the data in a database is through the DBMS.
a. True
b. False
8. Database programming languages receive all application requests and translate them into the complex
operations required to fulfill those requests.
a. True
b. False
Chapter 1: Database Systems
9. The DBMS reveals much of the database’s internal complexity to the application programs and users.
a. True
b. False
10. One disadvantage of the DBMS is that it increases the risk of data security breaches.
a. True
b. False
11. An operational database is sometimes referred to as an enterprise database.
a. True
b. False
12. A data warehouse can store data derived from many sources.
a. True
b. False
13. The same data might be simultaneously structured and unstructured depending on the intended processing.
a. True
b. False
14. Corporations use only structured data.
a. True
b. False
15. Field refers to a collection of related records.
a. True
b. False
16. 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.
a. True
b. False
Chapter 1: Database Systems
17. 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.
a. True
b. False
18. An advantage of database systems is that you needn’t perform frequent updates and apply latest patches.
a. True
b. False
19. One disadvantage of a database system over previous data management approaches is increased costs.
a. True
b. False
considerably less complex.
a. True
b. False
21. is the result of revealing the meaning of raw facts.
a. End-user data b. An encoded sample
c. An encrypted bit d. Information
22. is the body of information and facts about a specific subject.
a. Validation b. A format
c. Knowledge d. A database
23. Accurate, relevant, and timely information is the key to .
a. data management b. good decision making
c. knowledge d. understanding
24. 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
Chapter 1: Database Systems
25. 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
26. serve as the intermediary between the user and the database.
a. DBMSs b. Metadata
c. End-user data d. Programming languages
27. 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
28. 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
29. 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
30. 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
31. 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
32. A(n) database is used by an organization and supports many users across many departments.
a. desktop b. workgroup
c. enterprise d. transactional
Chapter 1: Database Systems
33. 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
34. A workgroup database is a(n) database.
a. single-user b. multiuser
c. desktop d. distributed
35. 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
36. A desktop database is a database.
a. single-user b. multiuser
c. workgroup d. distributed
37. Data warehouse contains historical data obtained from the .
a. operational databases b. desktop database
c. enterprise databases d. workgroup databases
38. 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.
39. data exist in the format in which they were collected.
a. Structured b. Semistructured
c. Unstructured d. Historical
40. data exist in a format that does not lend itself to processing that yields information.
a. Structured b. Semistructured
c. Unstructured d. Historical
Chapter 1: Database Systems
41. 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
42. Most data that can be encountered are best classified as .
a. structured b. semistructured
c. unstructured d. historical
43. 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.
44. An XML database supports the storage and management of XML data.
a. structured b. multistructured
c. fullystructured d. semistructured
45. 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
46. 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
47. A is a collection of related records.
a. schema b. field
c. column d. file
48. A is a character or group of characters that has a specific meaning.
a. database b. field
c. record d. file
Chapter 1: Database Systems
49. 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
50. 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
51. 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
52. is the result of processing raw data to reveal its meaning.
53. To reveal meaning, information requires .
54. Raw data must be properly for storage, processing and presentation.
55. Information is produced by processing .
56. is data about data through which the end-user data are integrated and managed.
57. A(n) is a collection of programs that manages the database structure and controls access to the data
stored in the database.
58. A(n) is a specific request issued to the DBMS for data manipulation.
Chapter 1: Database Systems
59. databases focus primarily on storing data used to generate information required to make tactical or
strategic decisions.
60. is a special language used to represent and manipulate data elements in a textual format.
61. A(n) is a spur-of-the-moment question.
62. exists when it is possible to make changes in the data storage characteristics without affecting an
application program’s ability to access data.
63. The term refers to scattered locations storing the same basic data.
64. exists when different and conflicting versions of the same data appear in different places.
65. exists when the same data are stored unnecessarily at different places.
66. A(n) develops when all required changes in the redundant data are not made successfully.
67. 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.
68. relates to activities that make a database operate more efficiently in terms of storage and access speed.
69. Describe what metadata are and what value they provide to the database system.
Chapter 1: Database Systems
70. What are the advantages of having the DBMS between the end user’s applications and the database?
71. Discuss some considerations when designing a database.
72. What are some reasons for studying file systems?
Chapter 1: Database Systems
73. 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?
Chapter 1: Database Systems
74. Describe the five types of users identified in a database system.
75. What are the disadvantages of database systems?
Chapter 1: Database Systems
76. Discuss any three functions performed by the DBMS that guarantee the integrity and consistency of the data in
the database.