Hello Zopistas out there! I just stumbled about the threadsafety of different SQL-DAs. I'm coming from mod_perl + MySQL so it seemed a natural choice for me to also run Zope with MySQL in the background. I'm doing research (= low budget) in clinical psychology and have people fill in all kinds of questionnaires regularly which I have to store somewhere later. Looking at some past messages it seems to me that free and speedy MySQL is awfully bottlenecked by MySQLdb and financially-out-of-range Oracle rules. But how big is the difference? Does anybody know? It also came to my mind that I might be missing an important feature of Zope: ZODB. For some reason (lack of marketing?) I just didn't realize that there is a database behind Zope that I could use to store my stuff. Last night I read some documentation but I have some questions left open: Can I access ZODB via TCP/IP socket to retrieve data for statistical calculations? What about performance? Ragnar Beer