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When
you define a subtype table, you need only define which table is its
supertype, and the columns that the supertype does NOT have. USoft
Developer will automatically insert the primary key fields to link
the subtype to its supertype.
To define a subtype table:
| 1.
|
Right-click on the table name in the Project Catalog, and
choose New Subtype. |
The New Subtype wizard
appears.
| 2.
|
Enter the requested information in each of the wizard's
dialogs. |
You will be prompted to
specify the columns that are to be part of the subtype table.
Once the subtype table is
created, you can modify it if required, by double-clicking its name
in the Project Catalog.
NOTE:
You can create a subtype table yourself by choosing Define,
Tables from the menu bar, in the same way as defining any table.
You must then click the Supertype lookup button in the Tables
window to define which table the new one is to be based on.
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