Rational® ClearQuest® stores
schemas in a special type of database called a schema repository.
A schema repository can store multiple schemas; for example, one schema
for defect change requests and another schema for feature enhancement change
requests. In Figure 1,
the schema repository stores Schema A and Schema B.
The schema repository can also include multiple versions of the same schema.
A new version is created each time the schema developer makes changes to
a schema and checks in the schema. For example, the schema developer might
add a field or modify the appearance of a record form. In
Figure 1,
the schema repository stores three versions of Schema A and two versions of
Schema B.
Figure 1. Schema repositories and schemas
