[McBan]

Firebase is mainly for mobile and web applications. Though it can be used with SA:MP if you tweak and edit a few things but even then, their really isn't much value in doing so. Simply understanding the basics and slightly-advanced level of MySQL will get you further, much further, than spending time trying to make Firebase work with SA:MP.

Not saying it can't be done but I don't think the outcome will be all that amazing.