Hi, Every morning, I am distilling the discussion. *) SQLite is not supported. If you have Drupal 5.2 and PDO which are already requirements then you have SQLite unless it's explicitly disabled and so far noone was able to answer the challenge at http://drupal4hu.com/node/177 . It's embedded into PHP so "supporting" it is like supporting the SimpleXML extension. Unlike MySQL where you need to run a separate server, here we have an embedded SQL engine right inside PDO. Also note that if we want (and I think we want) easier and more powerful install profiles then we will require SQLite for the install anyways. *) Deployment and rebuild. As it stands, now I believe that Drupal should be able to boot up enough to be able to copy the tables from MySQL to SQLite. I am not saying I am expecting it to be functional. After the tables are copied back into SQLite, it should either restart the bootstrap process or reload at the same URL. This solves deployment. *) Why do I want this? Once again, nicer code, especially for caching. Various pluggable subsystems (cache, session and path being the biggest wins here) will just work instead of ugly hacking. But in general, instead of trying to figure out during bootstrap coding "do we have a DB connection yet" the answer is always yes. Kind regards NK