查看schema信息：

[pgsql@localhost bin]$ ./psqlpsql (9.1.2)Type "help" for help.pgsql=# create schema gaosche;CREATE SCHEMApgsql=# select catalog_name,schema_name from information_schema.schemata ; catalog_name |    schema_name     --------------+-------------------- pgsql        | pg_toast pgsql        | pg_temp_1 pgsql        | pg_toast_temp_1 pgsql        | pg_catalog pgsql        | public pgsql        | information_schema pgsql        | gaosche(7 rows)pgsql=# select * from pg_namespace;      nspname       | nspowner |           nspacl           --------------------+----------+---------------------------- pg_toast           |       10 |  pg_temp_1          |       10 |  pg_toast_temp_1    |       10 |  pg_catalog         |       10 | {pgsql=UC/pgsql,=U/pgsql} public             |       10 | {pgsql=UC/pgsql,=UC/pgsql} information_schema |       10 | {pgsql=UC/pgsql,=U/pgsql} gaosche            |       10 | (7 rows)pgsql=#

故此，可以任务，schema，就是namespace。