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information requirements
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The information needed to support a business or other activity. Systems analysts turn information requirements (the what and when) into functional specifications (the how) of an information system.

Details and Summaries
Requirements are typically defined as lists of detailed transactions, such as orders and purchases, as well as summarized data from master records, such as customers, vendors and employees. How frequently this information is made available is also part of the requirement.

A Group of Data Elements
The actual information is a collection of data elements that are obtained by running query and report programs against a particular database or group of databases. The data and information that are stored in the databases in the first place are also derived from the information requirements. See functional specification and desirement.








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