Firebird 2.5.3, a relational database offering many ANSI SQL standard features that runs on Linux, Windows, and a variety of Unix platforms, has been released after a long hiatus. Firebird is a very powerful tool, but the developers have waited too long between releases. The last major update was back in November 2012. It seems now that the developers are trying to make up for lost time and they have made quite a few improvements, although there are no new features. According to the changelo...