Clarified architecture

Some weeks back I posted two diagrams with the architecture for SQLbusRT. One was for one database instance, and one was for multiple databases.

After reading a bit on about the triggers and events in MySQL 5.x, I decided to revise the architecture slightly. In my previous architecture, I had taken event handling outside of the database, but since MySQL supports triggers and events, there is no need to do this anymore.

I've not only taken out the event handling, I've also enhanced the readability of the diagram. To sum it up, these changes have been made:

• Event handling is now handled inside the database, and has therefore been taken out of the diagram
  
• The edges are now labeled for clarification
  
• Grey boxes have been added to show the process boundaries; every box is one single process
  

These changes result in the following diagram (click to enlarge):
One thing about the processes is important to understand: ORTE didn't get it's own grey process box, because the amount of processes running for ORTE depends on the number of systems connected to the ORTE bus.

For every network interface connected to the ORTE bus, one "ORTE manager" is started. This manager handles the connections between the publishers and the subscribers. E.g., when all processes are running on one machine, then one ORTE manager will be running. Distributing the processes over multiple machines will increase the number of ORTE managers.