Firebird Project - (Free)
Firebird is the perfect database for developing a small program or a large enterprise information system.
Firebird is a relational database that can better manage your database and to track the behavior of your SQL programs. By implementing this tool you can refresh your data and make the correction scripts. The software runs on Windows 95/98/Millenium/2000 / XP platforms. SQL Monitor Interbase / Firebird is a freeware software.
Firebird offers good performance regardless of the size of databases, ranging from a few kilobytes to several gigabytes, without slowdowns. Among the features there can be mentioned multi-generational architecture, support for external functions (UDFs), the ACID transaction model, full support of Stored Procedures and Triggers, full internal language for Stored Procedures and Triggers (PSQL), support for External Functions (UDFs), full implementation of cursors in PSQL, incremental Backups, referential Integrity, many third-party tools, including graphical tools aministration, replication, etc, many drivers database access : Napi , dbExpress driver , ODBC, OLEDB , pilot Net native JDBC type 4 driver module, Python , PHP , Perl, etc and more.