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数据词典 | |||
数据字典 | |||
English thesaurus | |||
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A database that contains the name, type, range of values, source and authorization for access for each data element in a database. It also indicates which application programs use those data so that when a data structure is contemplated, a list of the affected programs can be generated (May be a stand-alone information system used for management or documentation purposes, or it may control the operation of a database) | |||
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DD; DD (SA, CASE, DB) |
data dictionary : 34 phrases in 9 subjects |
Aviation | 6 |
Computer networks | 1 |
Earth sciences | 1 |
Electronics | 10 |
Geophysics | 1 |
Information technology | 10 |
Space | 2 |
Technology | 1 |
Telecommunications | 2 |