A database is a collection of tables, views, indexes, procedures, and
rules which have the same owner. A schema consists of the owner
name, also called the authorization name, and the following
statements, as needed, to define your database:
You can define a database by either creating individual objects or
using the CREATE SCHEMA statement to group the definitions within one
statement. This statement allows forward and
circular reference on referential integrity constraints.
You can define the database within a statement so that
database creation is atomic, that is,
the database is either complete or nothing is created.
The appropriate system catalog
views, such as SYSTEM.TABLE, SYSTEM.VIEWDEF, SYSTEM.TABAUTH, are
updated to reflect the schema you have defined.
After creating the schema, you can add, modify, or drop tables, and
grant or revoke authorities as necessary.
