Difference between revisions of "Database Schema"

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[[wikipedia:Database schema]] are analogous to [[directories]] at the operating system level, except that schemas cannot be nested. <ref>https://www.postgresql.org/docs/current/ddl-schemas.html</ref>
 
[[wikipedia:Database schema]] are analogous to [[directories]] at the operating system level, except that schemas cannot be nested. <ref>https://www.postgresql.org/docs/current/ddl-schemas.html</ref>
 
 
 
Typical schemas usage scenarios <ref> https://www.postgresql.org/docs/current/ddl-schemas.html</ref>:
 
Typical schemas usage scenarios <ref> https://www.postgresql.org/docs/current/ddl-schemas.html</ref>:
 
* To allow many users to use one database without interfering with each other.
 
* To allow many users to use one database without interfering with each other.
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* Third-party applications can be put into separate schemas so they do not collide with the names of other objects.
 
* Third-party applications can be put into separate schemas so they do not collide with the names of other objects.
  
 
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== Example ==
 
* [[CREATE SCHEMA]]
 
* [[CREATE SCHEMA]]
  

Revision as of 09:05, 10 October 2022

wikipedia:Database schema are analogous to directories at the operating system level, except that schemas cannot be nested. [1] Typical schemas usage scenarios [2]:

  • To allow many users to use one database without interfering with each other.
  • To organize database objects into logical groups to make them more manageable.
  • Third-party applications can be put into separate schemas so they do not collide with the names of other objects.

Example


Grant examples on schemas:


PostgreSQL: pg_catalog and public.


GRANT SELECT ON ALL TABLES IN SCHEMA public TO xxx;

Related

See also

  • https://www.postgresql.org/docs/current/ddl-schemas.html
  • https://www.postgresql.org/docs/current/ddl-schemas.html
  • https://stackoverflow.com/a/10353730
  • https://dba.stackexchange.com/questions/40045/how-do-i-list-all-schemas-in-postgresql
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