PostgreSQL | Schema
In PostgreSQL, you can create multiple schemas in the same database. Tables and functions are created in schemas, so even within the same database you can create tables with the same name if they are in different schemas. This section explains how to use schemas, including creating and deleting them.
Create a schema
CREATE SCHEMA schema_name AUTHORIZATION username;
Rename a schema
ALTER SCHEMA schema_name RENAME TO new_schema_name;
Change the schema owner
ALTER SCHEMA username OWNER TO new_username;
Delete a schema
DROP SCHEMA schema_name CASCADE;
https://www.postgresql.org/docs/10/static/sql-createschema.html