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What is an information policy and why is it needed in a firm?

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An information policy specifies the orga...

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In the context of data relationships,the term 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.
E) relationships between different customers.

F) C) and D)
G) D) and E)

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C

Relational DBMSs use key field rules to ensure that relationships between coupled tables remain consistent.

A) True
B) False

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All of the following are issues with the traditional file environment except:


A) data inconsistency.
B) inability to develop specialized applications for functional areas.
C) lack of flexibility in creating ad-hoc reports.
D) poor security.
E) data sharing.

F) B) and E)
G) D) and E)

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What are the differences between data mining and OLAP? When would you advise a company to use OLAP?

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Data mining uncovers hidden relationship...

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Which of the following is an automated or manual file that stores information about data elements and data characteristics such as usage,physical representation,ownership,authorization,and security?


A) Data dictionary
B) Data definition diagram
C) Entity-relationship diagram
D) Relationship dictionary
E) Data table

F) D) and E)
G) C) and D)

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You work for a retail clothing chain whose primary outlets are in shopping malls and are conducting an analysis of your customers and their preferences.You wish to find out if there are any particular activities that your customers engage in,or the types of purchases made in the month before or after purchasing select items from your store.To do this,you will want to use the data mining software you are using to do which of the following?


A) Identify associations
B) Identify clusters
C) Identify sequences
D) Classify data
E) Create a forecast

F) A) and B)
G) B) and E)

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Implementing a web interface for an organization's internal database usually requires substantial changes to be made to the database.

A) True
B) False

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A physical view shows data as it is actually organized and structured on the data storage media.

A) True
B) False

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Identify and describe three basic operations used to extract useful sets of data from a relational database.

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The select operation creates a subset co...

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Which of the following is not one of the techniques used in web mining?


A) Content mining
B) Structure mining
C) Server mining
D) Usage mining
E) Data mining

F) All of the above
G) A) and B)

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Which common database challenge is illustrated by a person receiving multiple copies of an L.L.Bean catalog,each addressed to a slightly different variation of his or her full name?


A) Data normalization
B) Data accuracy
C) Data redundancy
D) Data inconsistency
E) Data duplication

F) All of the above
G) B) and E)

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________ creates confusion that hampers the creation of information systems that integrate data from different sources.


A) Batch processing
B) Data redundancy
C) Data independence
D) Online processing
E) Data quality

F) B) and E)
G) A) and D)

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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) where,from,and join.
E) where,find,and select.

F) C) and D)
G) A) and E)

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Which of the following tools enables users to view the same data in different ways using multiple dimensions?


A) Predictive analysis
B) SQL
C) OLAP
D) Data mining
E) Hadoop

F) B) and E)
G) None of the above

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In data mining,which of the following involves recognizing patterns that describe the group to which an item belongs by examining existing items and inferring a set of rules?


A) Associations
B) Sequences
C) Classifications
D) Clustering
E) Forecasting

F) None of the above
G) B) and C)

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You have been hired by a furniture leasing company to implement its first business intelligence systems and infrastructure.To prepare for your initial report,describe the types of data the firm can use to support business intelligence and the systems that you will implement to support both power users and casual users,and explain how these systems or tools work together.

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All types of data can be used for their business intelligence systems,including operational,historical,machine-generated,Web/social data,audio and video data,and external data.The large datasets can be collected in a Hadoop cluster and used by an analytic platform to support power user queries,data mining,OLAP,etc.A data warehouse can be used to house all data,including smaller data sets and operational data,and be used to support casual use,for queries,reports,and digital dashboards,as well as support the analytic platforms.Smaller data marts can be created from the data warehouse to enable faster querying and typical queries from casual users.

Which of the following is a specialized language that programmers use to add and change data in the database?


A) Data access language
B) Data manipulation language
C) Structured query language
D) Data definition language
E) DBMS

F) A) and D)
G) A) and C)

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B

A record is a characteristic or quality used to describe a particular entity.

A) True
B) False

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The logical view of a database:


A) displays the organization and structure of data on the physical storage media.
B) includes a digital dashboard.
C) allows the creation of supplementary reports.
D) enables users to manipulate the logical structure of the database.
E) presents data as they would be perceived by end users.

F) A) and B)
G) A) and C)

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