Generating a CDM from an OOM

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

Selected

Result

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.

ϖTo update an existing CDM by generating from an OOM:

1Select ToolsGenerate 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.

2Select the Update existing Conceptual Data Model radio button.

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Sybase 7.5 Updating an existing CDM, To update an existing CDM by generating from an OOM, 210, Preserve Modifications