PG_NAMESPACE

PG_NAMESPACE records namespaces, that is, schema-related information. If the database object isolation attribute is enabled, users can view only the schema information that they have the permission to access.

**Table 1** PG_NAMESPACE columns
Name	Type	Description
oid	oid	Row identifier (hidden attribute, which must be specified)
nspname	name	Name of a namespace
nspowner	oid	Owner of the namespace
nsptimeline	bigint	Timeline when the namespace is created on the DN. This column is for internal use and valid only on the DN.
nspacl	aclitem[]	Access permission. For details, see GRANT and REVOKE.
in_redistribution	"char"	Specifies whether the content is in the redistribution state. t (true): yes f (false): no
nspblockchain	Boolean	If the value is true, the tamper-proof mode is used. If the value is false, the non-tamper-proof mode is used.