PostgreSQL 8.4.22 Documentation | ||||
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Prev | Fast Backward | Chapter 44. System Catalogs | Fast Forward | Next |
Table 44-1 lists the system catalogs. More detailed documentation of each catalog follows below.
Most system catalogs are copied from the template database during database creation and are thereafter database-specific. A few catalogs are physically shared across all databases in a cluster; these are noted in the descriptions of the individual catalogs.
Table 44-1. System Catalogs
Catalog Name | Purpose |
---|---|
pg_aggregate | aggregate functions |
pg_am | index access methods |
pg_amop | access method operators |
pg_amproc | access method support procedures |
pg_attrdef | column default values |
pg_attribute | table columns ("attributes") |
pg_authid | authorization identifiers (roles) |
pg_auth_members | authorization identifier membership relationships |
pg_cast | casts (data type conversions) |
pg_class | tables, indexes, sequences, views ("relations") |
pg_constraint | check constraints, unique constraints, primary key constraints, foreign key constraints |
pg_conversion | encoding conversion information |
pg_database | databases within this database cluster |
pg_depend | dependencies between database objects |
pg_description | descriptions or comments on database objects |
pg_enum | enum label and value definitions |
pg_foreign_data_wrapper | foreign-data wrapper definitions |
pg_foreign_server | foreign server definitions |
pg_index | additional index information |
pg_inherits | table inheritance hierarchy |
pg_language | languages for writing functions |
pg_largeobject | large objects |
pg_listener | asynchronous notification support |
pg_namespace | schemas |
pg_opclass | access method operator classes |
pg_operator | operators |
pg_opfamily | access method operator families |
pg_pltemplate | template data for procedural languages |
pg_proc | functions and procedures |
pg_rewrite | query rewrite rules |
pg_shdepend | dependencies on shared objects |
pg_shdescription | comments on shared objects |
pg_statistic | planner statistics |
pg_tablespace | tablespaces within this database cluster |
pg_trigger | triggers |
pg_ts_config | text search configurations |
pg_ts_config_map | text search configurations' token mappings |
pg_ts_dict | text search dictionaries |
pg_ts_parser | text search parsers |
pg_ts_template | text search templates |
pg_type | data types |
pg_user_mapping | mappings of users to foreign servers |