PostgreSQL 9.5.0 Documentation
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49.31. pg_namespace

The catalog pg_namespace stores namespaces. A namespace is the structure underlying SQL schemas: each namespace can have a separate collection of relations, types, etc. without name conflicts.

Table 49-31. pg_namespace Columns

NameTypeReferencesDescription
oidoid Row identifier (hidden attribute; must be explicitly selected)
nspnamename Name of the namespace
nspowneroidpg_authid.oidOwner of the namespace
nspaclaclitem[]  Access privileges; see GRANT and REVOKE for details
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