You should consider a schema to be the user account and collection of all objects therein as a schema for all intents and purposes.
SCOTT is a schema that includes the EMP, DEPT and BONUS tables with various grants.
SYS is a schema that includes tables, views, grants, and additional components.
SYSTEM is a schema.
Technically, a schema is the set of metadata (data dictionary) used by the database, typically generated using DDL. A schema defines attributes of the database, such as
- columns, and