PostgreSQL is an open source enterprise class database server which runs in the background of your computer as a service, this is the database used by PokerTracker 4 to store the information collected from hand histories. PokerTracker 4 communicates with the PostgreSQL server to read from as well as write to the database tables, the information contained within these tables allows PokerTracker 4 to run filtered queries to display your results in the application or in the HUD. There are several different SQL (Structured Query Language) database servers available on the market today, but the most stable open source solution that is ACID compliant is PostgreSQL, it is far more robust than the more commonly known MySQL. You can learn more about PostgreSQL by visiting their website at http://www.postgresql.org/.
Please enjoy this geeky extranormal video which describes the differences between MySQL and PostgreSQL, we hope you enjoy it as much as we did!
Playing poker is fun but your data is serious business, that is why we chose PostgreSQL as the database solution for PokerTracker 4.