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Generating a CDM from an OOM
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Updating an existing CDM
There are two ways to update an existing CDM depending on whether the
Preserve Modifications options is selected or not selected:
Preserve Modifications Result
Selected You can manually compare and merge existing
CDM (target model) with the newly generated
CDM ( source model)
Not selected The existing CDM is automatically replaced by the
newly generated CDM
When Preserve Modifications is selected, the Merge Models window appears
after the new CDM has been successfully generated. You can use the Merge
window to select objects to be updated, deleted, or added to the target model.
The target model must be open in the workspace to be merged with a source
model.
You can only generate a CDM from the active OOM diagram window.
The existing CDM, into which you want to generate objects from the OOM,
must be open in the workspace.
v To update an existing CDM by generating from an OOM:
1 Select Tools➤Generate Conceptual Data Model.
The CDM Generation Options dialog box appears. If you do not have a
CDM in the current Workspace, the Update existing Conceptual Data
Model option is not available.
2 Select the Update existing Conceptual Data Model radio button.