Difference between revisions of "Database Schema"

From wikieduonline
Jump to navigation Jump to search
Line 9: Line 9:
  
  
 +
Examples:
 
* <code>[[GRANT USAGE]] ON [[ALL SEQUENCES IN SCHEMA]] your_schema TO mygrp;</code><ref>https://stackoverflow.com/a/10353730</ref>
 
* <code>[[GRANT USAGE]] ON [[ALL SEQUENCES IN SCHEMA]] your_schema TO mygrp;</code><ref>https://stackoverflow.com/a/10353730</ref>
 
 
* <code>[[GRANT USAGE ON]] [[SCHEMA]] your_schema TO [[GROUP]] your_group;</code>
 
* <code>[[GRANT USAGE ON]] [[SCHEMA]] your_schema TO [[GROUP]] your_group;</code>
  

Revision as of 10:00, 27 April 2022

Database schemas are analogous to directories at the operating system level, except that schemas cannot be nested. [1]


Typical schemas usage scenarios:

  • 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.


Examples:


PostgreSQL:

Related

See also

  • 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
  • Advertising: