Back قاموس البيانات Arabic Diccionari de dades Catalan Data-Dictionary German Diccionario de datos Spanish واژه‌نامه داده Persian Dictionnaire des données French Kamus data ID データ辞書 Japanese 데이터 사전 Korean Берилиштер сөздүгү Kirghiz

Data dictionary

Not to be confused with Dictionary (data structure).
A simple layout of a data dictionary

A data dictionary, or metadata repository, as defined in the IBM Dictionary of Computing, is a "centralized repository of information about data such as meaning, relationships to other data, origin, usage, and format".[1] Oracle defines it as a collection of tables with metadata. The term can have one of several closely related meanings pertaining to databases and database management systems (DBMS):

  • A document describing a database or collection of databases
  • An integral component of a DBMS that is required to determine its structure
  • A piece of middleware that extends or supplants the native data dictionary of a DBMS
  1. ^ ACM, IBM Dictionary of Computing, 10th edition, 1993
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