Previous Topic: Change TypeNext Topic: Positioning the List to Course Code


Simulating a Change to a Model Object

Simulating a change to a model object lets you see the impact of a proposed change on other objects in the model before you actually make the change. Simulation identifies which other model objects need to be edited or generated as a result of the proposed change.

When you change a model object, the only objects that can be affected by the change are those that use the changed object. As a result a major part of simulating a change consists of expanding usages for the object to be changed.

Suppose you want to change the length of the Course code field. This is a *PUBLIC change; in other words, some using objects will need to be edited to incorporate the change.