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单词 data dictionary
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data dictionary
data dictionary n. Computing a collection of metadata describing the contents, format, and structure of a database and the relationship between its elements, used for controlling access to and manipulation of the database.
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1973 Brit. Patent 1,327,962 7/1 All the merged and sorted data base program information from step 35 is stored in the portion of work space 1120 of the disk pack on file 128 called ‘file 23’. Another name given this file is the ‘data dictionary’.
1992 UNIX Today! 17 Feb. sf8/5 He would still like to see ADS..automatically import schema changes into its own data dictionary.
2009 K. L. Baldauf & R. M. Stair Succeeding with Technol. (ed. 3) vii. 398 Another important step in creating a database is to establish a data dictionary, a detailed description of all data used in the database.
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