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Both Oracle and Microsoft Access use SQL to retrieve information from a database.

A) True
B) False

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A firm's information policy lays out who is responsible for updating and maintaining the information in a database system.

A) True
B) False

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Explain what big data refers to. What benefits does it have, and what challenges does it pose?

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Big data are datasets with volumes so hu...

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A ________ is a repository for raw unstructured data or structured data that for the most part have not yet been analyzed.


A) data mart
B) data warehouse
C) dashboard
D) data lake
E) relational DBMS

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

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The select operation in a relational database joins records from different tables.

A) True
B) False

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Common data quality problems include all of the following except:


A) misspelled names.
B) transposed numbers.
C) incorrect codes.
D) missing codes.
E) Internet connectivity problems.

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

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Hadoop is an open source software framework for processing large quantities of any type of data, including video and Twitter feeds.

A) True
B) False

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Capabilities and tools to manage and analyze large quantities and different types of data from multiple sources are collectively known as:


A) DSS.
B) business intelligence infrastructure.
C) OLAP.
D) data mining.
E) in-memory computing.

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

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Which of the following is an example of a company whose business model is based on access to large databases through the web?


A) Gartner
B) Fortune
C) IBM
D) Microsoft
E) Facebook

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

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Non-relational databases:


A) store information in an unstructured format.
B) use rows and columns to organize data.
C) are used to store structured and unstructured data.
D) are used to store low volumes of transactional data.
E) use database-mapping to normalize relations.

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

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Redundant data often stems from the use of different codes to identify the same data in a firm's various information systems.

A) True
B) False

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Imagine you are running a growing business with an active presence on social media. How would you better understand what your customers think about your business using these platforms?

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Text mining and web mining techniques wo...

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A logical view of data shows data as it is organized on the storage media.

A) True
B) False

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A foreign key is a field that links to a separate table.

A) True
B) False

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OLAP is a tool that enables users to:


A) obtain online answers to ad hoc questions in a rapid amount of time.
B) view both logical and physical views of data.
C) quickly diagram data relationships.
D) normalize data.
E) find hidden patterns in large databases.

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

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What are the similarities and differences between a data warehouse and a data mart?

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A data warehouse stores current and hist...

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Within a corporate information services department, the task of establishing the physical database and its logical relations are responsibilities of the ________ function.


A) data management
B) data administration
C) server administration
D) data modeling
E) database administration

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

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Text mining is the discovery of useful patterns on the web.

A) True
B) False

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What types of relationships are possible in a relational database? Describe and give an example of each.

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There are three types of relationships: ...

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Data mining is a tool for allowing users to:


A) quickly compare transaction data gathered over many years.
B) perform multidimensional data analysis.
C) obtain online answers to ad hoc questions in a rapid amount of time.
D) summarize massive amounts of data into much smaller, traditional reports.
E) find hidden relationships in data.

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

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