Introducing I/O Channels into the Device Database Opens New Potentialities for Configuration Management

Abstract

The reference RDBMS for BESSY II has been set up with a device oriented data model. This has proven adequate for e.g. template based RTDB generation, modelling etc. But since assigned I/O channels have been stored outside the database (a) numerous specific conditions had to be maintained within the scripts generating configuration files and (b) several generic applications could not be set up automatically by scripts. In a larger re-design effort the I/O channels are introduced into the RDBMS. That modification allows to generate a larger set of RTDBs, map specific conditions into database relations and maintain application configurations by relatively simple extraction scripts.