just wondering, if anyone has translated the GPL and MySQL AB legalese into real-world scenarios. it seems unclear what ''derivative'' or ''linked'' or ''distribute'' means - how much IPC or TCP traffic do you need before two components are as ''linked'' in terms of functionality as a dynamically loaded library? if you are distributing your app over HTTP to users, could you be faced with sticking to an old version of MySQL or switching to Postgres to avoid future licensing fees? 0x00 an online invoicing system with a monthly and/or volume-based subscription fee, using mysql for data storage 0x01 a private intranet created for a company''s internal use. for convenience (and no desire to wast time figuring out how to ''obfuscate'' ruby code) the source is provided. as with 0x00, mysql is not modified in any way.. the second one seems a bit more vague - perhaps youre not distributing mysql with the app, if they have a server to run on it and ''apt-get install mysql'' on their own. from an essence standpoint, if i was a fan of MySQL i would proably buy a license in either case, unless the company was a non-profit and strapped for cash, but considering how many times ive had to repair corrupt tables in the past and had interface libraries randomly break with version upgrades im looking around - maybe postgres is better in this regard.. -- Posted via http://www.ruby-forum.com/.