Inheritance in CDM/LDM models in PowerDesigner 15.3?

Question

I downloaded PowerDesigner 15.3's trial version, and I want to build a Logical Data Model of a database. The problem is that this database must use inheritance heavily, and I can't find a way to build an inheritance relationship... The 'Inheritance' button is in fact the only disabled button in the pallete, and I can't find a way to enable it... Did anyone else have this problem too? How can I enable it?

Thank you very much.

score 9 · Accepted Answer · edited Sep 04 '19 at 15:31

9

I can only guess that your model is using the Barker notation.

Try to select another notation in the Tools > Model Options dialog.

For example Choose E/R+Merise.

edited Sep 04 '19 at 15:31

Menuka Ishan

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answered May 29 '11 at 20:54

pascal

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That was the problem! Thank you very much! – Miguel Jun 01 '11 at 11:34
I was struggling with this for a loooooong time! – atoMerz Nov 07 '13 at 06:09

score 0 · Answer 2 · answered Apr 03 '13 at 05:06

You'd better build a conceptual data model(CDM) first, and build the inheritance relationship in CDM.

After finished the CDM, you can select Tools>Generate Logical Data Model to genrate the LDM.

After adjust the LDM, you can select Tools>Generate Physical Data Model to genrate the PDM.

At last, select Database>Generate Database to generate SQL scripts.

Inheritance in CDM/LDM models in PowerDesigner 15.3?

2 Answers2