## 51.32. `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 51.32. `pg_namespace` Columns

Column Type Description
`oid` `oid` Row identifier
`nspname` `name` Name of the namespace
`nspowner` `oid` (references `pg_authid`.`oid`) Owner of the namespace
`nspacl` `aclitem[]` Access privileges; see Section 5.7 for details