Database support will live outside of Rocket's core in Rocket's contrib [0] library. Everything in contrib is implemented independently of Rocket and is entirely optional to use. The implementation will be database agnostic and extensible to any database. I'm a big believer in pluggable, optional components with no forced decisions [1], and database support will follow the same philosophy.

[0]: https://api.rocket.rs/rocket_contrib/index.html

[1]: https://rocket.rs/guide/introduction/#foreword