PG_NAMESPACE

true: The mode is the tamper-proof mode.
false: The mode is not the tamper-proof mode.

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 a namespace
nsptimeline	bigint	Timeline when a namespace is created on the database node. This column is for internal use and valid only on the database node.
nspacl	aclitem[]	Access permission For details, see 7.13.12.1 GRANT and 7.13.17.9 REVOKE.
in_redistribution	"char"	Specifies whether the content is in the redistribution state.
nspblockchain	Boolean	Specifies whether the mode is the tamper-proof mode. true: The mode is the tamper-proof mode. false: The mode is not the tamper-proof mode.
nspcollation	oid	Default collation of the namespace (a value may exist only when sql_compatibility is set to 'b').