Exam 2: Data Preparation and Cleaning

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Unlike the IMPACT cycle,requesting data is not an iterative process.

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The purpose of transforming data is:

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In order to obtain the right data,it is important to have a firm grasp of what data is available and how it is stored.

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Removing headings or subtotals from data is an example of which of the following?

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Data normalization can reduce data redundancy and improve data integrity.

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There are a variety of methods that you could take to retrieve the data,including SQL.What does SQL stand for?

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Which of the following best describes the purpose of relational databases?

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A composite primary key is made up of the three or more primary keys in the tables that it is linking.

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________ is the metadata that describes each attribute in a database.

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Assume that you will be up for a promotion next month and you'd like to analyze a recently acquired database to show off your data analytic skills.After identifying the goal of your data analysis,using the first step of the IMPACT cycle,what steps would you take if you have direct access to the database?

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Mastering the data can also be described via the ETL process.The ETL process stands for:

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A template can make communication easier between data requestor and provider.

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Chapter 2 describes,the various ways in which data can be stored for differing purposes.Describe the two ways data can be organized and the purpose for each organizational structure.

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Mastering the data requires a firm understanding of what data is available to you and where it is stored,as well as being skilled in the process of extracting,transforming,and loading (ETL).

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Which of the following best describes the purpose of a primary key?

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