Are you sure? Do we have evidence that the accounting end of the advertisement network, etc. is handled on MySQL? Or is it the backend for the public side onl

Are you sure? Do we have evidence that the accounting end of the advertisement network, etc. is handled on MySQL? Or is it the backend for the public side only? Let me give you an example. I have a customer that uses MySQL for some processing on their web site and all data gets batched up nightly and entered into the PostgreSQL-based accounting system. The MySQL db is accessed only by the app which does the processing and the connectors to the PostgreSQL db. The PostgreSQL db has a lot more logic in it and is a lot more complex. In their case, their environment is not subject to any of the MySQL gotchas. They can make sure the credit card processing software runs in an acceptable SQL mode, and if something goes wrong between the PostgreSQL export of reports and the MySQL public side (which has happened for reasons other than MySQL's fault), they can track down and fix the problem. That's what loosely coupled systems are about. IT in this case is about risk management. How can you guarantee that specific important data will not be lost. You can do this with MySQL for some set of environments (either because the data truncation isn't a big deal, regarding your tweets, or because it can be retrieved from another source, or because there is only one app accessing the database so you don't have to worry about apps turning off strict mode), but you can do it with PostgreSQL for a much larger set of environments and that's what the complaint is.