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STEP 3: Understanding the different types of data and the data flow

Configuration data:
This data is maintained in ORACLE (MASTER IS SQL) and automatically synchronized into the RtDB whenever the data is changed. As data is usually immediately transferred into RtDB (depending on the SYNC configuration for the table), applications like drivers can trigger for changes of configuration data and automatically reconfigure themselves (hot-reconfiguration).
Process data:

This data is generated by the process, maintained in RtDB (MASTER IS RTDB) and synchronized into ORACLE whenever the data changes. The interface between the process and RtDB is established via specific process drivers. These drivers are usually written in C or VB and have full access to RtVars and RtDB functions as well as the process interface.

Time base archives:
Data from the process, the process image, is stored in time-based archives in ORACLE (via RtDB) with time-stamp and meter-readings using configurable sampling rates. Typical data would be e.g. temperatures, forces or other readings with min, max, mean and average values.
Event based archives:

Events from the process are stored in event-based archives in ORACLE (via RtDB) with time-stamp and meter-readings. Events are stored as they arrive. Typical data would be e.g. status changes of subsystems, error messages, conditions etc.

Can I use all these nice RTA features also in large systems?


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