Reference: Create Schema Statement

Create Schema allows creating a new schema within a database. Schemas are essentially namespaces to avoid name collisions between objects in the database.

Usage example:

create schema sales;
create schema sorting;

Within these distinct schemas, you can create tables with now no longer clashing names:

create table sales.orders(...);
create table sorting.orders(...);

Using Schemas

You can always refer to tables with their fully schema-qualified name. However, if you only operate in certain schemas, you can explicitly set the search_path setting:

set search_path = 'sales';
select * from orders; -- now equivalent to "sales.orders"

Permissions

To create a schema, you need to have superuser or createdb permissions.