You're talking two different users here - in my instance, I was talking application users, not database users. Yes - realistically - you can use just the one database and have the user permissions for it, it's just a case of making sure you track everything right and don't access the database through the wrong connection - not much different from making sure you access the right database. Realistically - a previous comment hits the nail on the head. All a different database is, in essence, is a different folder - a different place where you can store the same stuff. It's all about how you want to deal with things, how you visualize them and best interact with them. Any database should have sufficient user privs to handle these things, postgresql - mysql - or other. It's all about who the users who can actually access the database are, and how the application will need to map its users to databaes users. Come to think, however - I don't know that you can assign privledges per-table in mysql. So, if your 'user levels' aren't strictly hierarchical - you probably need to break things up (e.g. if payroll shouldn't be able to access inventory). - Martin Norland, Database / Web Developer, International Outreach x3257 The opinion(s) contained within this email do not necessarily represent those of St. Jude Children's Research Hospital. -----Original Message----- >From: Antoine [mailto:melser.anton@xxxxxxxxx] >Sent: Monday, October 18, 2004 4:02 PM >To: php-db@xxxxxxxxxxxxx >Subject: Re: how many databases should I create .. <chop> .. >shouldn't a good rdbms take care of that though (with reasonable security measures)? can't you >get fine grained user privs, at least with a proper db? postgres? Cheers Antoine -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php