MIS10E testbank CH06 PDF

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Chapter 6

Foundations of Business Intelligence: Databases and Information Management True-False Questions 1.

A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: False

2.

Reference: p. 230

Difficulty: Easy

Reference: p. 233

Difficulty: Medium

Reference: p. 233

Difficulty: Medium

Reference: p.233

A data dictionary is a language associated with a database management system that end users and programmers use to manipulate data in the database. Answer: False

9.

Difficulty: Easy

OODBMS are slower than relational DBMS. Answer: True

8.

Reference: p. 229

One of the drawbacks to OODBMS are that they cannot work with applets. Answer: False

7.

Difficulty: Medium

Many applications today require databases that can store and retrieve multimedia. Answer: True

6.

Reference: pp. 226–227

Every record in a file should contain at least one key field. Answer: True

5.

Difficulty: Easy

A DBMS separates the logical and physical views of the data. Answer: True

4.

Reference: p. 226

Each characteristic or quality describing a particular entity is called an attribute. Answer: True

3.

Difficulty: Easy

Difficulty: Easy

Reference: pp. 233–234

In a relational database, complex groupings of data must be streamlined to eliminate awkward many-to-many relationships. Answer: True

Difficulty: Easy

91

Reference: p. 236

10.

A data warehouse may be updated by a legacy system. Answer: True

11.

Reference: p. 243

Difficulty: Hard

Reference: p. 243

Difficulty: Medium

Reference: p. 245

Difficulty: Easy

Reference: p. 246

Difficulty: Medium

Reference: p. 245

Data administration is a special organizational function that manages the policies and procedures through which data can be managed as an organizational resource. Answer: True

20.

Difficulty: Easy

Common Gateway Interface is a specification for processing data on a Web server. Answer: True

19.

Reference: p. 241

A Web interface requires changes to the internal database. Answer: False

18.

Difficulty: Medium

In a Web-based database, middleware is used to transfer information from the organization’s internal database back to the Web server for delivery in the form of a Web page to the user. Answer: True

17.

Reference: p. 240

Predictive analysis is synonymous with data mining. Answer: False

16.

Difficulty: Easy

Data mining can be a challenge to individual privacy. Answer: True

15.

Reference: p. 239

OLAP enables users to obtain online answers to ad-hoc questions in a fairly rapid amount of time, except when the data are stored in very large databases. Answer: False

14.

Difficulty: Medium

OLAP is a key tool of BI. Answer: True

13.

Reference: p. 239

A data warehouse is typically comprised of several smaller data marts. Answer: False

12.

Difficulty: Easy

Difficulty: Medium

Reference: p. 247

Data cleansing is the same process as data scrubbing. Answer: True

Difficulty: Easy

92

Reference: p. 248

Multiple-Choice Questions 21.

Analysis In the chapter-opening case, which of the four generic strategies against competitive forces did NASCAR focus on in implementing its new information systems? a. b. c. d.

Customer and supplier intimacy Product differentiation Low-cost leadership Focus on market niche

Answer: a

Difficulty: Medium

Reference: 223–234

Analysis in terms of categorize 22.

Analysis For which function was NASCAR’s new information system geared toward? a. b. c. d.

Supply chain management Sales and marketing Production and manufacturing Finance and accounting

Answer: b

Difficulty: Easy

Reference: 223–234

Analysis in terms of categorize 23.

Analysis Which of the following best illustrates the relationship between entities and attributes? a. b. c. d.

The entity CUSTOMER with the attribute PRODUCT The entity CUSTOMER with the attribute PURCHASE The entity PRODUCT with the attribute PURCHASE The entity PRODUCT with the attribute CUSTOMER

Answer: b

Difficulty: Hard

Analysis in terms of categorize

93

Reference: pp. 226–227

24.

A characteristic or quality describing an entity is called a(n): a. b. c. d.

field. tuple. key field. attribute.

Answer: d 25.

Difficulty: Easy

Reference: pp. 226–227

Analysis An example of a pre-digital database is : a. b. c. d.

a library’s card catalog. a cash register receipt. a doctor’s office invoice. a list of sales totals on a spreadsheet.

Answer: a

Difficulty: Medium

Reference: p. 227

Analysis in terms of categorize 26.

The confusion created by __________________ makes it difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources. a. b. c. d.

batch processing data redundancy data independence online processing

Answer: b 27.

Reference: p. 228

Duplicate data in multiple data files is: a. b. c. d.

data redundancy. data multiplication. data independence. data backups.

Answer: a 28.

Difficulty: Easy

Difficulty: Easy

Reference: p. 228

A DBMS: a. b. c. d.

makes the physical database available for different logical views. makes the logical database available for different analytical views. makes the physical database available for different analytical views. makes the relational database available for different analytical views.

Answer: a

Difficulty: Medium

94

Reference: p. 229

29.

The logical view: a. b. c. d.

shows how data are organized and structured on the storage media. presents an entry screen to the user. allows the creation of supplementary reports. presents data as perceived by end users.

Answer: d Difficulty: Medium 30.

The type of logical database model that treats data as if they were stored in twodimensional tables is the: a. b. c. d.

OODBMS. pre-digital DBMS. relational DBMS. hierarchical DBMS.

Answer: c 31.

Difficulty: Easy

field. row. column. table.

Answer: b

Difficulty: Easy

Reference: p. 230

In a relational database, a record is referred to in technical terms as a(n): a. b. c. d.

tuple. row. entity. field.

Answer: 33.

Reference: p. 230

In a table for customers, the information about a single customer would reside in a single: a. b. c. d.

32.

Reference: p. 229

a

Difficulty: Medium

Reference: p. 230

A field identified in a table as holding the unique identifier of the table’s records is called the: a. b. c. d.

primary key. key field. primary field. unique ID.

Answer: a

Difficulty: Medium

95

Reference: p. 230

34.

A field identified in a record as holding the unique identifier for that record is called the: a. b. c. d.

primary key. key field. primary field. unique ID.

Answer: b 35.

DB2. Oracle. Microsoft SQL Server. Microsoft Access.

Answer: d

Reference: p. 230

DBMS for small handheld computing devices. Internet DBMS. mainframe relational DBMS. DBMS for midrange computers.

Answer: a

Difficulty: Hard

Reference: p. 230

Microsoft SQL Server is a(n): a. b. c. d.

DBMS for small handheld computing devices. Internet DBMS. desktop relational DBMS. DBMS for midrange computers.

Answer: d 38.

Difficulty: Medium

Oracle Database Lite is a(n): a. b. c. d.

37.

Reference: p. 230

DBMS for midrange computers include all of the following EXCEPT: a. b. c. d.

36.

Difficulty: Medium

Difficulty: Hard

Reference: p. 230

In a relational database, the three basic operations used to develop useful sets of data are: a. b. c. d.

select, project, and where. select, join, and where. select, project, and join. select, from, and join.

Answer: c

Difficulty: Medium

96

Reference: p. 231

39.

The select operation: a. b. c. d.

combines relational tables to provide the user with more information than is otherwise available. creates a subset consisting of columns in a table. identifies the table from which the columns will be selected. creates a subset consisting of all records in the file that meet stated criteria.

Answer: d 40.

b. c. d.

combines relational tables to provide the user with more information than is otherwise available. identifies the table from which the columns will be selected. creates a subset consisting of columns in a table. organizes elements into segments.

Answer: a

b. c. d.

Reference: pp. 231–233

combines relational tables to provide the user with more information than is otherwise available. creates a subset consisting of columns in a table. organizes elements into segments. identifies the table from which the columns will be selected.

Answer: b

Difficulty: Easy

Reference: p. 233

The data dictionary serves as an important data management tool by: a. b. c. d.

assigning attributes to the data. creating an inventory of data contained in the database. presenting data as end users or business specialists would perceive them. maintaining data in updated form.

Answer: b 43.

Difficulty: Easy

The project operation: a.

42.

Reference: p. 231

The join operation: a.

41.

Difficulty: Easy

Difficulty: Medium

Reference: pp. 233–234

An automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security is the: a. b. c. d.

data dictionary. data definition diagram. entity-relationship diagram. relationship dictionary.

Answer: a

Difficulty: Medium

97

Reference: pp. 233–234

44.

The type of database management approach that can handle multimedia is the: a. b. c. d.

hierarchical DBMS. relational DBMS. network DBMS. object-oriented DBMS.

Answer: d 45.

Relational DBMS Hierarchical DBMS Object-relational DBMS OODBMS

Answer: c

Reference: p. 233

data access language. data manipulation language. structured Query language. data definition language.

Answer: b

Difficulty: Easy

Reference: p. 234

The most prominent data manipulation language today is: a. b. c. d.

Access. DB2. SQL. Crystal Reports.

Answer: c 48.

Difficulty: Medium

The specialized language programmers use to add and change data in the database is called: a. b. c. d.

47.

Reference: p. 233

Which of the following database types is useful for storing java applets as well as processing large numbers of transactions? a. b. c. d.

46.

Difficulty: Easy

Difficulty: Medium

Reference: p. 234

DBMS typically include report-generating tools in order to: a. b. c. d.

retrieve and display data. display data in an easier-to-read format. display data in graphs. perform predictive analysis.

Answer: b

Difficulty: Medium

98

Reference: p. 235

49.

A schematic of the entire database that describes the relationships in a database is called a(n): a. b. c. d.

data dictionary. intersection relationship diagram. entity-relationship diagram. data definition diagram.

Answer: c 50.

ends in two short marks. ends in one short mark. ends with a crow’s foot. ends with a crow’s foot topped by a short mark.

Answer: a

Reference: p. 236

ends in two short marks. ends in one short mark. ends with a crow’s foot. ends with a crow’s foot topped by a short mark.

Answer: d

Difficulty: Hard

Reference: p. 236

The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called: a. b. c. d.

normalization. data scrubbing. data cleansing. data defining.

Answer: a 53.

Difficulty: Hard

A one-to-many relationship between two entities is symbolized in a diagram by a line that: a. b. c. d.

52.

Reference: p. 236

A one-to-one relationship between two entities is symbolized in a diagram by a line that: a. b. c. d.

51.

Difficulty: Medium

Difficulty: Easy

Reference: p. 236

In what type of a database system is the central database replicated at all remote locations? a. b. c. d.

Partitioned Normalized Distributed Networked

Answer: c

Difficulty: Medium

99

Reference: p. 238

54.

The disadvantage of a distributed database system is: a. b. c. d.

lack of flexibility. susceptibility to data inconsistency. poor responsiveness to local users. require more expensive computers.

Answer: b 55.

historical data from legacy systems. current data. internal and external data sources. historic and current internal data.

Answer: d

Reference: p. 239

a data mart typically focuses on a single subject area or line of business. all the information is historical. a data mart uses a Web interface. all of the information belongs to a single company.

Answer: a

Difficulty: Easy

Reference: p. 239

Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are known as: a. b. c. d.

DSS. business intelligence. OLAP. data mining.

Answer: b 58.

Difficulty: Medium

A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because: a. b. c. d.

57.

Reference: p. 238

A data warehouse is composed of: a. b. c. d.

56.

Difficulty: Medium

Difficulty: Medium

Reference: p. 240

The tool that enables users to view the same data in different ways using multiple dimensions is: a. b. c. d.

predictive analysis. SQL. OLAP. data mining.

Answer: c

Difficulty: Hard

100

Reference: p. 241

59.

OLAP is a tool for enabling: a. b. c. d.

users to obtain online answers to ad-hoc questions in a rapid amount of time. users to view both logical and physical views of data. programmers to quickly diagram data relationships. programmers to normalize data.

Answer: a 60.

quickly compare transaction data gathered over many years. find hidden relationships in data. obtain online answers to ad hoc questions in a rapid amount of time. summarize massive amounts of data into much smaller, traditional reports.

Answer: b

Difficulty: Medium

Reference: p. 242

In terms of data relationships, associations refers to: a. b. c. d.

events linked over time. patterns that describe a group to which an item belongs. occurrences linked to a single event. undiscovered groupings.

Answer: c 62.

Reference: p. 241

Data mining is a tool for allowing users to: a. b. c. d.

61.

Difficulty: Easy

Difficulty: Hard

Reference: p. 242

Analysis What category best describes the FBI’s CODIS system described in the chapter case? a. b. c. d.

TPS MIS KMS ESS

Answer: c

Difficulty: Medium

Reference: pp. 244–245

Analysis in terms of categorize 63.

An alternative to using application server software for interfacing between a Web server and back-end databases is: a. b. c. d.

CGI. HTML. Java. SQL.

Answer: a

Difficulty: Easy

101

Reference: p. 245

64.

The special organizational function whose responsibilities include the technical and operational aspects of managing data, including physical database design and maintenance, is called: a. b. c. d.

data administration. database administration. information policy administration. data auditing.

Answer: b 65.

Difficulty: Easy

Reference: p. 247

Synthesis What is the first step you should take in managing data for a firm? a. b. c. d.

Identify the data needed to run the business. Cleanse the data before importing it to any database. Normalize the data before importing to a database. Audit your data quality.

Answer: a

Difficulty: Medium

Reference: p. 247

Synthesis in terms of assemble, plan 66.

Analysis Which common database challenge is illustrated by the text’s discussion of receiving multiple pieces of the same direct mail advertising? a. b. c. d.

Data normalization Data accuracy Data redundancy Data inconsistency

Answer: d

Difficulty: Hard

Reference: p. 248

Analysis in terms of categorize 67.

Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called: a. b. c. d.

data auditing. defragmentation. data scrubbing. data optimization.

Answer: c

Difficulty: Easy

102

Reference: p. 248

68.

As discussed in the Interactive Session: Management, what problem was British Telecom facing in its data file environment? a. b. c. d.

Program-data dependence Data redundancy Lack of data sharing Data quality

Answer: d 69.

Difficulty: Hard

Reference: p. 249

Analysis The systems developed by Panasonic in the chapter case study fall into what category of information system? a. b. c. d.