A data dictionary is a centralized repository of information about data,. The purpose of a data dictionary in oracle is to indicate a more general software utility than a catalogue.
A data dictionary provides a comprehensive list of data elements with detailed descriptions, including their meaning, relationships, and structure. It serves as a reference guide to ensure consistency, accuracy, and understanding of data across an organization. It helps in data management, data integration, and data governance practices.
An oracle developer like "Oracle SQL" is used for modelling in computing. It's a data modeller for working in SQL. It provides reporting, tuning and unit testing.
Oracle Data Guard is program that manages, monitors, and maintains Oracle software. One can purchase Oracle Data Guard on Oracle's official website, or Slideshare.
David C. Kreines has written: 'Oracle data dictionary pocket reference' -- subject(s): Database management, Oracle (Computer file) 'Oracle database administration' -- subject(s): Oracle (Computer file), Relational databases, SQL (Computer program language)
dictionary
The purpose of the Oracle was to provide guidance to the villagers. The Oracle provided wisdom from the ages through its priestess whom it communicated through.
the distinct in oracle is there is no repetition of data in a query
example of data dictionary
Data dictionary it contains the names and description of the dictionary tables and views.
data dictionary
Oracle has many versions like 9i, 10g, 11g, 12c .Oracle database can store infinte data unless you have put any restriction on it.
In Oracle Database, the shared pool typically consists of two main memory areas: the library cache and the data dictionary cache. The library cache contains shared SQL and PL/SQL areas, including executable code and parsed representations of SQL statements. The data dictionary cache stores data definitions and query results for quick access.