Extract Sessions

An extract will have its own set of sessions. This is illustrated below:

In this example the extract DB was created when the Master DB had 19 sessions. The extract thus represents a branching of the model from session 19. Changes were then made to the Master and to the Extract. The Extract has had nine more sessions created (sessions 2-10). The Master has had 20 more sessions added (sessions 20 - 39).

Changes made to an extract can be flushed back to the Master DB. Similarly the extract may be refreshed with changes made to the Master.