Firebird is a relational database offering many ANSI SQL standard features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used in production systems, under a variety of names, since 1981. This short Firebird database tutorial offers a few Firebird server tips: what to look out for; what can cause problems.
Video producer: http://www.ibexpert.com/