-- Below of any commands can be used to find the schema details:

postgres=# select schema_name,schema_owner from information_schema.schemata;
schema_name         | schema_owner
--------------------+--------------
raj                | postgres
information_schema | postgres
public             | postgres
pg_catalog         | postgres
pg_toast_temp_1    | postgres
pg_temp_1.         | postgres
pg_toast           | postgres
(7 rows)

postgres=# select nspname as schema_name , pg_get_userbyid(nspowner) as schema_owner from pg_catalog.pg_namespace;
schema_name         | schema_owner
--------------------+--------------
pg_toast            | postgres
pg_temp_1           | postgres
pg_toast_temp_1     | postgres
pg_catalog          | postgres
public              | postgres
information_schema  | postgres
raj                 | postgres
(7 rows)

postgres=# \dn+