Caché Parameter File Reference
IdKey
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Primary key constraint behavior.
Synopsis
[SQL]    IdKey=n
Description
The value n may be 1 or 0:
Examples
IdKey=1
Range of Values
0 or 1. The default is 1.
Management Portal
On the page System Administration > Configuration > SQL and Object Settings > General SQL Settings, for the Are Primary Keys Created through DDL not ID Keys setting, choose Yes (true) or No (false).