By following the below step you will be able to create a new object type with dm_document as super type
1. Right Click the project -> New -> Type
2. Give the name for the Object Type
3. The below screen will appear, to select the “Super Type” click the highlited “select” button
4. Select the dm_document as “Super Type” for the object.
5. The dm_document is selected as “Super Type”, select the “Attribute” tab
6. For creating a attribute click the highlited “New” button
7. By default the below screen appears
8. Change the Name of the attribute as below, this will be the attribute name of the table in DB
9. Select the “Application Interface Display” and give a Label Name. This name will appear in the Webtop or DA or other Client application as one of the Properties of the document
10. Click on the “Display” tab highlited in the previous screen. Give a description for the Object Type in the “Type label” properties as shown.
11. Save the changes. Right click the Project -> Install Documentum project
12. Enter the credentials in the “Install Wizard” and click Login
13. In the Install Option select the “Use Project and Artifact Settings” and click Finish
14. The Type and attributes are created.