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Explain ETL and the role of a data mart in business.

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Extraction, transformation, and loading ...

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A data dictionary compiles all of the metadata about the data elements in the data model.

A) True
B) False

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What is a data artist?


A) processes and manages algorithms across many machines in a computing environment
B) focuses on forecasting future trends and producing insights using sophisticated quantitative methods, including statistics, descriptive and predictive data mining, simulation, and optimization
C) occurs when the user goes into an emotional state of over-analysis (or over-thinking) a situation so that a decision or action is never taken, in effect paralyzing the outcome
D) a business analytics specialist who uses visual tools to help people understand complex data

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

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What occurs when the user goes into an emotional state of over-analysis (or over-thinking) a situation so that a decision or action is never taken, in effect paralyzing the outcome?


A) analytical paradox
B) analytical analysis
C) analysis paralysis
D) analysis paradox

E) A) and D)
F) B) and C)

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A primary key is a field (or group of fields) that uniquely identifies a given record in a table.

A) True
B) False

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Which of the following would not be considered part of the timely characteristic of high-quality information?


A) Is the zip code missing in the address?
B) Is the information current with respect to business needs?
C) Is the customer address current?
D) Is the information updated weekly or hourly?

E) None of the above
F) A) and D)

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Which of the following encompasses all organizational information, and its primary purpose is to support the performing of managerial analysis tasks?


A) analytical information
B) transactional information
C) statistical information
D) targeted information

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

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The financial industry uses business intelligence to predict hardware failures.

A) True
B) False

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Which of the following is a problem associated with dirty data?


A) nonformatted data
B) misleading data
C) incorrect data
D) All of these are correct.

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

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What compiles all of the metadata about the data elements in the data model?


A) data entity
B) data element
C) data attribute
D) data dictionary

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

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What is an example of using cluster analysis in business to create target-marketing strategies?


A) Google search
B) first name information
C) zip code segmentation
D) last name associations

E) A) and B)
F) C) and D)

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What provides real-time information in response to query requests?


A) real-time information
B) real-time systems
C) information level
D) information quality

E) B) and C)
F) B) and D)

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Estimation determines values for an unknown continuous variable behavior or estimated future value.

A) True
B) False

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ETL stands for extraction, transformation, and loading.

A) True
B) False

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In terms of big data what includes different forms of structured and unstructured data?


A) variety
B) veracity
C) volume
D) velocity

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

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Which of the following would not be considered part of the accurate characteristic of high-quality information?


A) Is the name spelled correctly?
B) Is the email address invalid?
C) Do the name and the phone values have the exact same information?
D) Is aggregate information in agreement with detailed information?

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

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Which of the following creates, reads, updates, and deletes data in a database while controlling access and security?


A) database element
B) database management system
C) data governance
D) data file

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

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Relational integrity constraints enforce business rules vital to an organization's success and often require more insight and knowledge than relational integrity constraints.

A) True
B) False

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Infographics can present the results of large data analysis looking for patterns and relationships that monitor changes in variables over time.

A) True
B) False

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Metadata provides details about data.For example, metadata for an image could include its size, resolution, and date created.

A) True
B) False

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