New Features in Firebird 5, Part 1: Optimizer
Since Firebird 5.0 release is very close, it is a good time to start learning new features of Firebird 5.
With this video and this article we start to publish detailed materials about Firebird 5, and the first part is devoted to the optimizer.
If you would like to see the quick 20 minutes review of improvements in Firebird, see this video:
If you would like to see more details and dig into the in-depth materials, read the article "Detailed New Features of Firebird 5. Part 1: Improvements in Optimizer" by Denis Simonov (one of the authors and editors of Firebird Documentation Project).