?Explain what a data dictionary is, making sure to include definitions of the terms data element and record in your explanation. Provide examples of each of these terms as you include them.

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Answer 1

?A data dictionary, or data repository, is a central storehouse of information about the system's data. An analyst uses the data dictionary to collect, document, and organize specific facts about the system, including the contents of data flows, data stores, entities, and processes. The data dictionary also defines and describes all data elements and meaningful combinations of data elements. A data element, also called a data item or field, is the smallest piece of data that has meaning within an information system. Examples of data elements are student grade, salary, Social Security number, account balance, and company name. Data elements are combined into records, also called data structures. A record is a meaningful combination of related data elements that is included in a data flow or retained in a data store. For example, an auto parts store inventory record might include part number, description, supplier code, minimum and maximum stock levels, cost, and list price.