Using rails with existing database or adjusting it

Hi,
I have a php bot that fill a mysql database, and i want to build a web
app on top of that with rails.
I have te possibility to change the database structure to adhere to the
rails convetions (it is still quasi empty)
If i do that, i will able to use all the rails commodities and
convetions (as if i build the bot and/or database directly in rails) ?
You have other suggestions for, or methods to adjust the database ?
It’ s a good idea do modify it to adhere to the rails convetions ? Or it
is the same (i mean, if I modify it i will really able to use rails with
it as if I built it ?).
Thank you in advance.
Bye

this may depend on many details, so nobody can give you really good
advice
but in my experience Rails relies much on naming conventions, eg where
to use singular or plural forms for names
most of that can be adjusted, but you may have trouble to find errors,
when Rails automaticly tries to access some table or field with an
‘assumed’ name and it will slow down your development process, since
you’ll have to find out more details how to tell Rails, what fieldames
to use

if you can adjust it, you should definitely go for that