Browse categories
PostgreSQL releases
- PostgreSQL 15 (dev)
- PostgreSQL 14 (latest)
- PostgreSQL 13
- PostgreSQL 12
- PostgreSQL 11
- PostgreSQL 10
- PostgreSQL 9.6 (EOL)

Version charts

SQL commands
System catalog tables
System catalog views
System statistics views
File system functions

Contrib modules
Object Identifier Types
Progress reporting views
Storage parameters (relopts)

Useful overviews

xlog renaming in Pg 10
Online tools for PostgreSQL
Abbreviations and acronyms

Useful links

PostgreSQL documentation
PostgreSQL feature matrix
PostgreSQL versioning policy
PostgreSQL latest versions

@postgrespedia

Contents

Change history
References
Categories
See also

Foreign keys

Table constraints defining relationship between tables

Foreign keys are table constraints defining relationship between tables.

Foreign keys have been available in PostgreSQL since version 7.0.

Change history

PostgreSQL 7.0
- added (initial commit: 34eb4f0a)

References

PostgreSQL documentation: Constraints - foreign keys

Categories

See also

constraints