A namespace is the structure underlying SQL92 schemas: each namespace
can have a separate collection of relations, types, etc without name
conflicts.
Table 3-21. pg_namespace Columns
| Name | Type | References | Description |
|---|
| nspname | name | | Name of the namespace |
| nspowner | int4 | pg_shadow.usesysid | Owner (creator) of the namespace |
| nspacl | aclitem[] | | Access permissions |