Firebird is a relational database offering many ANSI SQL-99 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 on production systems under a variety of names since 1981.

This package contains the server binary as well as its configuration files. The default mode of operation is the so called "super", which is a single-threaded server process with shared database cache between connections. The two other operation modes -- "classic" (separate process/cache for each connection) and "superclassic" (separate thread/cache for each connection) are also available via configuration options.