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Pg_Catalog

Pg_Catalog - If you're writing an application that depends on information stored in the system tables, use an existing catalog view or create a catalog view to isolate the application from. (there are many other system catalogs, but there should rarely. See the list of catalogs, their names, purposes, and links to. What is the pg_catalog schema? These catalogs form a centralized repository that stores metadata about the database itself, such as tables, indexes, columns, constraints, functions, users, privileges, extensions, query. More detailed documentation of each catalog follows below. The relationships between pg_am, pg_amop, pg_amproc, pg_operator and pg_opclass are particularly hard to understand and will be described in depth (in the section on interfacing types and operators to indexes) after we have discussed basic extensions. From tracking database objects to monitoring current activity to inspecting. The system catalogs are the place where a relational database management system stores schema metadata, such as information about tables and columns, and internal bookkeeping. All system catalogs have names that begin with pg_.

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