Differences between Firebird and InterBase

InterBase was created in 1985: it was the first commercial multi-versioning database. In the end of 1999, Borland decided to close InterBase development and published its source codes under InterBase Public License. This code was copied (it is permitted by the license), and Firebird was born – from the version 1.0 Firebird is a production-ready database, based on previous decades of InterBase development.