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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 43-21. pg_namespace Columns
| Name | Type | References | Description |
|---|---|---|---|
| nspname | name | Name of the namespace | |
| nspowner | int4 | pg_shadow.usesysid | Owner of the namespace |
| nspacl | aclitem[] | Access privileges |