Sybase 7.5 manual Physical Data, 219

Models: 7.5

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Chapter 7 Generating a Physical Data Model from an Object-Oriented Model

Update existing

You must indicate the following parameters when you update an existing

Physical Data

PDM:

Model

 

Parameter

Description

Select Model

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

DBMS

Current Database Management System definition

 

(DBMS) for the existing PDM

 

 

Preserve Modifications

When selected, allows a comparison and merge of the

 

newly generated PDM (default PDM) with the existing

 

PDM

 

 

Clearing the Preserve Modifications checkbox

When Preserve modifications is not selected, PowerDesigner automatically replaces the selected target model (existing PDM) with the newly generated PDM. 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 PDM.

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Sybase 7.5 manual Physical Data, 219