Schema is data about an object type. Schemas are a generic mechanism for describing object types and their constraints or attributes.

When a schema is created, the object type to which the schema is applied is selected; and the type of schema, simple or complex, is chosen.

For more information on creating, updating, and deleting schema, as well as managing attributes, ranges, and enumerated values, see Managing Schemas.

A simple schema is an extension of a primitive type, such as boolean, int, or float. Simple schemas can have constraints such as ranges or enumerated values.

A complex schema contains one or more attributes. Complex schema attributes can have constraints, such as ranges or enumerated values.