版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、chapter 5foundations of business intelligence: databases and information managementtrue-false questions1.each characteristic or quality describing a particular entity is called an attribute.answer:truedifficulty:easyreference:p. 1522.a grouping of characters into a word, a group of words, or a compl
2、ete number is called a record.answer:falsedifficulty:easyreference:p. 1533.every record in a file should contain at least one key field.answer:truedifficulty:easyreference:p. 1534.in a relational database, complex groupings of data must be streamlined to eliminate awkward many-to-many relationships.
3、answer:truedifficulty:easyreference:p. 1555.dbms separate the logical and physical views of the data.answer:truedifficulty:mediumreference:p. 1576.many applications today require databases that can store and retrieve multimedia.answer:truedifficulty:easyreference:p. 1627.one of the drawbacks to oodb
4、ms is that they cannot work with applets.answer:falsedifficulty:mediumreference:p. 1628.oodbms are slower than relational dbms.answer:truedifficulty:mediumreference:p.1629.a data warehouse may include a legacy system.answer:truedifficulty:easyreference:p. 16210.a data warehouse is typically comprise
5、d of several smaller data marts.answer:falsedifficulty:easyreference:p. 16211.olap is a key tool of bi.answer:truedifficulty:easyreference:p. 16312.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 database
6、s.answer:falsedifficulty:easyreference:p. 16413.data mining can be a challenge to individual privacy.answer:truedifficulty:easyreference:p. 16614.predictive analysis is a technique of data mining.answer:falsedifficulty:mediumreference: pp. 16615.middleware is used to transfer information from the or
7、ganizations internal database back to the web server for delivery in the form of a web page to the user.answer:truedifficulty:easyreference:p. 16816.a web interface requires changes to the internal database.answer:falsedifficulty:easyreference:p. 16817.common gateway interface is a specification for
8、 processing data on a web server.answer:truedifficulty:mediumreference:p. 16818.data administration is a very important organizational function, and is fairly easy to implement.answer:falsedifficulty:easyreference:p. 16919.a firms information policy lays out who is responsible for updating and maint
9、aining the information in a database system.answer:truedifficulty:easyreference: pp. 16920.data cleansing is the same process as data scrubbing.answer:truedifficulty:easyreference: pp. 172multiple-choice questions21.analyzewhich of the four generic strategies against competitive forces did 7-11 need
10、 to implement in order to manage the disadvantages it faced?a. customer and supplier intimacyb. product differentiationc. low-cost leadershipd. focus on market nicheanswer: cdifficulty:mediumreference: 150-151analyze in terms of categorize22.analyzefor which function was 7-11s new information system
11、 geared toward?a. supply chain managementb. sales and marketingc. production and manufacturingd. finance and accountinganswer: adifficulty:mediumreference: 150-151analyze in terms of categorize23.analyzewhat category best describes 7-11s new information system?a. tpsb. misc. kmsd. essanswer: bdiffic
12、ulty:mediumreference:p. 150-151analyze in terms of categorize24.analyze:an example of a pre-digital database is :a. a librarys card-catalog.b. a cash register receipt.c. a doctors office invoice.d. a list of sales totals on a spreadsheet.answer: adifficulty:mediumreference:p. 152analyze in terms of
13、categorize25.analyzewhich of the following best illustrates the relationship between entities and attributes?a. the entity customer with the attribute productb. the entity customer with the attribute purchasec. the entity product with the attribute purchased. the entity product with the attribute cu
14、stomeranswer: bdifficulty:hardreference:p. 152analyze in terms of categorize26.the type of logical database model that treats data as if they were stored in two-dimensional tables is the:a.oodbms.b.pre-digital dbms.c.relational dbms.d.hierarchical dbms.answer: cdifficulty:easyreference:p. 15227.anal
15、yzewhat are the relationships that the relational database is named for?a. relationship between rows and columnsb. relationships between entitiesc. relationships between tablesd. relationships between databasesanswer: bdifficulty:hardreference:p. 152-155analyze in terms of examine28.a characteristic
16、 or quality describing an entity is called a(n): a.field.b.tuple.c.key field.d.attribute.answer: ddifficulty:easyreference:p. 15229.the most basic business database is comprised of:a. three tables: a table for customers, a table for suppliers and parts, and a table for sales.b. four tables: a table
17、for customers, a table for suppliers, a table for parts, and a table for sales.c. four tables: a table for customers, a table for employees, a table for suppliers and parts, a table for sales.d. five tables: a table for customers, a table for employees, a table for suppliers, a table for parts, and
18、a table for sales.answer: ddifficulty:easyreference:p. 15330.in a table for customers, the information about a single customer would reside in a single:a. field.b. row.c. column.d. table.answer: bdifficulty:easyreference:p. 15331.in a relational database, a record is called a(n):a.tuple.b.row.c.enti
19、ty.d.field.answer: adifficulty:mediumreference:p. 15332.a field identified in a table as holding the unique identifier of the tables records is called the:a. primary key.b. key field.c. primary field.d. unique id.answer: adifficulty:easyreference:p. 15333.a field identified in a record as holding th
20、e unique identifier for that record is called the:a. primary key.b. key field.c. primary field.d. unique id.answer: bdifficulty:easyreference:p. 15334.duplicate data in multiple data files is:a.data redundancy.b.data multiplication.c.data independence.d.typical of a relational model.answer: adifficu
21、lty:easyreference:p. 15435.a schematic of the entire database that describes the relationships in a database is called a: a.data ersection relationship diagram.c.entity-relationship diagram.d.data definition diagram.answer: cdifficulty:mediumreference:p. 15436.a one-to-one relationsh
22、ip between two entities is symbolized in a diagram by a:a. line that ends in two short marks.b. line that ends in one short mark.c. line that ends with a crows foot.d. line that ends with a crows foot topped by a short mark.answer: adifficulty:hardreference:p. 15537.a one-to-many relationship betwee
23、n two entities is symbolized in a diagram by a:a. line that ends in two short marks.b. line that ends in one short mark.c. line that ends with a crows foot.d. line that ends with a crows foot topped by a short mark.answer: ddifficulty:hardreference:p. 15538.a table that links two tables that have a
24、many-to-many relationship is called a:a. derived table.b. intersection relation.c. foreign table.d. entity-relationship table.answer: bdifficulty:hardreference:p. 15539.the process of streamlining data to minimize redundancy and awkward many-to-many relationships is called:a. normalization.b. data s
25、crubbing.c. data cleansing.d. data administration.answer: adifficulty:easyreference: p. 155-740.a dbms:a. makes the physical database available for different logical views.b. makes the logical database available for different analytical views.c. makes the physical database available for different an
26、alytical views.d. makes the relational database available for different analytical views.answer: adifficulty:mediumreference: p. 15741.the logical view:a.shows how data are organized and structured on the storage media.b.presents an entry screen to the user.c.allows the creation of supplementary rep
27、orts.d.presents data as they would be perceived by end users.answer: ddifficulty:mediumreference:p. 15742.dbms for midrange computers include all of the following except:a.db2.b.oracle.c.microsoft sql server.d.microsoft access.answer: ddifficulty:mediumreference:p. 15743.oracle database lite is a(n)
28、:a.dbms for small handheld computing devices.b.internet dbms.c.mainframe relational dbms.d.dbms for midrange computers.answer: adifficulty:mediumreference:p. 15744.access is a:a.dbms for small handheld computing devices.b.mainframe relational dbms.c.dbms for midrange computers.d.desktop relational d
29、bms.answer: ddifficulty:mediumreference:p. 15745.db2 is a(n):a.dbms for small handheld computing devices.b.internet dbms.c.mainframe relational dbms.d.dbms for desktop computers.answer: cdifficulty:mediumreference:p. 15746.microsoft sql server is a(n):a.dbms for small handheld computing devices.b.in
30、ternet dbms.c.desktop relational dbms.d.dbms for midrange computers.answer: ddifficulty:mediumreference:p. 15747.in a relational database, the three basic operations used to develop useful sets of data are:a.select, project, and where.b.select, join, and where.c.select, project, and join.d.select, f
31、rom, and join.answer: cdifficulty:mediumreference:p. 15848.the select operation:bines relational tables to provide the user with more information than is otherwise available.b.creates a subset consisting of columns in a table.c.identifies the table from which the columns will be selected.d.crea
32、tes a subset consisting of all records in the file that meets stated criteria.answer: ddifficulty:easyreference:p. 15849.the join operation:a.combines relational tables to provide the user with more information than is otherwise available.b.identifies the table from which the columns will be selecte
33、d.c.creates a subset consisting of columns in a table.d.organizes elements into segments.answer: adifficulty:easyreference:p. 15850.the project operation:a.combines relational tables to provide the user with more information than is otherwise available.b.creates a subset consisting of columns in a t
34、able.c.organizes elements into segments.d.identifies the table from which the columns will be selected.answer: bdifficulty:easyreference:p. 15851.the specialized language programmers use to add and change data in the database is called : a.data dictionary language.b.data manipulation language.c.stru
35、ctured query language.d.data definition language.answer: bdifficulty:easyreference:p. 16052.the most prominent data manipulation language today is:a.access.b.db2c.sql.d.crystal reportsanswer: cdifficulty:mediumreference:p. 16053.the data dictionary serves as an important data management tool by:a.as
36、signing attributes to the data.b.creating an inventory of data contained in the database.c.presenting data as end users or business specialists would perceive them.d.maintaining data in updated form.answer: bdifficulty:mediumreference:p. 16054.an automated or manual file that stores information abou
37、t data elements and data characteristics such as usage, physical representation, ownership, authorization, and security is the:a.data dictionary.b.data definition diagramc.entity-relationship diagramd.relationship dictionaryanswer: adifficulty:mediumreference:p. 16055.dbmss typically include report-
38、generating tools in order to:a. retrieve and display data.b. display data in an easier-to-read format.c. display data in graphs.d. perform predictive analysis.answer: bdifficulty:mediumreference:p. 16156.the type of database management approach that can handle multimedia is the:a.hierarchical dbms.b
39、.relational dbms.work dbms.d.object-oriented dbms.answer: ddifficulty:easyreference:p. 16257.which of the following database types is useful for storing java applets as well as typical business data?a.relational dbmsb.hierarchical dbmsc.object-relational dbmsd.oodbmsanswer: cdifficulty:mediumre
40、ference:p. 16258.a data warehouse is composed of:a.historical datab.current datac.internal and external data sources.d.historic and current internal dataanswer: ddifficulty:mediumreference:p. 16359.a data mart usually can be constructed more rapidly and at lower cost than a data warehouse because:a.
41、a data mart typically focuses on a single subject area or line of business.b.all the information is historical.c.a data mart uses a web interfaced.all of the information belongs to a single company.answer: adifficulty:easyreference:p. 16360.tools for consolidating, analyzing, and providing access to
42、 vast amounts of data to help users make better business decisions are known as:a. dssb. business intelligencec. olpd. data mininganswer: bdifficulty:mediumreference:p. 16361.the tool that enables users to view the same data in different ways using multiple dimensions is:a.predictive analysisb.sqlc.
43、olapd.data mininganswer: cdifficulty:hardreference:p. 16462.olap is a tool for enabling:a. users to obtain online answers to ad hoc questions in a rapid amount of time.b. users to view both logical and physical views of data.c. programmers to quickly diagram data relationships.d. programmers to norm
44、alize data.answer: adifficulty:easyreference:p. 16463.data mining is a tool for allowing users to:a. quickly compare transaction data gathered over many years.b. find hidden relationships in data.c. obtain online answers to ad hoc questions in a rapid amount of time.d. summarize massive amounts of d
45、ata into much smaller, traditional reports.answer: bdifficulty:easyreference:p. 16564.in terms of data relationships, associations refers to:a. events linked over time.b. patterns that describe a group to which an item belongs.c. occurrences linked to a single event.d. undiscovered groupings.answer:
46、 cdifficulty:mediumreference: p. 165-6 65.analyzeas described in the chapter text, which competitive force was banco de credito peru facing?a. substitute productsb. customers bargaining powerc. suppliers bargaining powerd. threat of new entrantsanswer: ddifficulty:hardreference: p. 167analyze in ter
47、ms of categorize66.analyzeas described in the chapter text, which of the following strategies best describes banco de credito perus tactics in overcoming the competitive forces it was facing?a. low-cost leadershipb. product differentiationc. focus on market niched. strengthen customer and supplier i
48、ntimacyanswer: ddifficulty:hardreference: p. 167analyze in terms of categorize67.an alternative to using application server software for interfacing between a web server and back-end databases is:a.cgi.b.html.c.java.d.sql.answer: adifficulty:easyreference:p. 16868.the confusion created by _ makes it
49、 difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources.a.batch processingb.data redundancyc.data independenced.online processinganswer: bdifficulty:easyreference:p. 17069.which common database cha
50、llenge is illustrated by the texts discussion of downloading digital music?a. data normalizationb. data accuracyc. connecting to legacy systemsd. poor data analysisanswer: bdifficulty:easyreference:p. 17170.detecting and correcting data in a database or file that are incorrect, incomplete, improperl
51、y formatted, or redundant is called:a.data auditing.b.defragmentationc.data scrubbingd.data optimizationanswer: cdifficulty:easyreference:p. 17271.evaluatewhich was the greater challenge of the four facing the fbi in its drive to create a unified information system?a. data definitionb. data redundan
52、cyc. outdated legacy systemsd. poor information policiesanswer: ddifficulty:hardreference: p. 175-77evaluate in terms of assess72.synthesiswhat is the first step you should take in managing data for a firm?a. identify the data needed to run the businessb. cleanse the data before importing it to any
53、databasec. normalize the data before importing to a databased. audit your data qualityanswer: adifficulty:mediumreference:p. 172synthesis in terms of assemble, planfill in the blanks73.databases record information about general categories of information referred to as entities.difficulty: easyreference:p. 15274.relational databases organize data into two-dimensional tables with columns and rows.difficulty: easyreference:p. 15275.a(n) attribute is a piece of information describing a particular entity.difficulty: easyreference:p
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2024新教材高中政治第一单元中国共产党的领导1.1中华人民共和国成立前各种政治力量课时作业含解析部编版必修3
- 2024-2025学年高中历史专题二中代中国的科学技术与文化3中国古典文学的时代特色学案含解析人民版必修3
- 2024-2025学年新教材高中政治第三单元全面依法治国作业含解析新人教版必修第三册
- 打井机械费合同范例
- 工业电气劳务合同范例
- 影视服务合同范例
- 婚庆演艺合同范例
- 山东咨询合同范例
- 乌市购房合同范例
- 托幼机构服务合同模板
- DB37-T 3656-2019地质灾害治理工程监理技术规范
- 装饰、装修安全教育培训试卷+答案
- 娱乐场所备案登记表样表
- 北京版小学数学二年级上册《探索规律》课件
- 医务科督导检查表格模板
- 急性颅脑损伤患者抢救流程图
- 医院糖尿病小组工作总结及工作计划
- 《沐浴心育阳光 健康快乐成长》心理健康主题班会课件
- 小学生心理健康讲座ppt
- GB∕T 20973-2020 膨润土-行业标准
- 深基坑开挖危险源辨识及控制措施
评论
0/150
提交评论