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data dictionary
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data dictionary

In computing, a file that holds data about data – for example, lists of files, number of records in each file, and types of fields. Data dictionaries are used by database software to enable access to the data; they are not normally accessible to the user.



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The term may refer to detailed compilations such as data dictionaries and repositories that provide a substantial amount of information about each data element.
It governs the definition of data dictionaries to be implemented on top of relational databases (see repository, data dictionary).
The term may refer to detailed compilations such as data dictionaries and repositories that provide a substantial amount of information about each data element.
 
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