Open Source Databases Comparison: MySQL, PostSQL and mSQL
IntroductionWhat do you do if you don't have access to an expensive high-end database in your organization, but still wish to make use of its capabilities? If it's the high cost of one of the more popular RDBMSes that is preventing you from entering into the worldful high speed world of databases, then there are a couple of products that run under Linux that could be just want you are looking for.
MiniSQL or mSQL is a lightweight database engine designed to provide fast access to stored data with low memory requirements. MySQL is slightly more sophisticated in the features it has available and is faster than mSQL but uses more memory. PostSQL uses more memory still and it is slower but it is much richer in features.