Firebird is a Relational database offering many ANSI SQL standard features that runs on Linux, Windows, Unix Firebird is a relational database which will offer you many ANSI SQL ordinary features that runs on Windows, Linux and a variety of Unix systems.
Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers.
Firebird has been used in production systems, under a variety of names since 1981.
Here are some key features of "Firebird":
-including derived tables -support for Execute Block -increased table sizes -new improved index code -expression indices -numerous optimiser improvements -enhanced security features -support for on-line incremental backups -new international language support