Sybase 7.5 CDM generation options, Update existing, Clearing the Preserve Modifications checkbox

Models: 7.5

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Chapter 6 Generating a Conceptual Data Model from an Object-Oriented Model

Update existing

You must indicate the following parameters when you update an existing

Conceptual Data

CDM:

Model

 

Parameter

Description

Select Model

Target Conceptual Data Model. This is the existing CDM that the newly generated CDM (source model) is merged with to create an updated CDM

Preserve Modifications

When selected, allows a comparison and merge of the newly generated CDM (default CDM) with the existing CDM

Clearing the Preserve Modifications checkbox

When Preserve modifications is not selected, PowerDesigner automatically replaces the selected target model (existing CDM) with the newly generated CDM. If you want to choose which objects to add or delete from the target model, you must select Preserve Modifications to compare and merge the two CDM.

CDM generation options

You can set the following general generation options:

Option

Check model

Save generation dependencies

Model Notation

Description

Checks the model before generating the CDM, and stops generation if an error is found

When selected, PowerDesigner keeps track of the identity of each generated object. This is useful when merging two CDM which have been generated from the same OOM. Objects can be compared and recognized as the same object, even if the object has been modified in the target CDM

Indicates the modeling methodology used in the generated CDM. You can choose Entity/Relationship, Merise, or Mixed. If you select Mixed, the two methodologies are available in the same model

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Sybase 7.5 manual CDM generation options, Update existing, Clearing the Preserve Modifications checkbox, 205