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Data Dictionary

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Data Dictionary

A Data Dictionary is a centralised repository which holds information about data, mainly to be used for the purpose of information resource management. The information a Data Dictionary holds about data can include things such as its meaning, origin, format and even its relationship to other data. A Data Dictionary, however, in differing from catalogues, does not contain the data itself.

The function of a Data Dictionary is solely to define the basic organisation of a database including things such as; providing a list of all the files in the database, the different types of files stored, and the number of records in each file.

A Data Dictionary can also be used to identify the owner of the data, who is able to access the data and the frequency with which it is accessed. In short, a Data Dictionary can be said to provide book-keeping information for the management of data.

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