[Seaside] Magritte3 and persistence?

[David Carlos Manuelda]

I've read in soem tutorial (don't remember which right now) that magritte 
have support for data persistency.

If I did not understood it bad, it would mean that it can autogenerate SQL 
queries from descriptions so they don't need to be coded manually into the 
database class methods, but just could not find any info and/or examples 
regarding it.

Can someone point me in the right direction, or tall me if I understood it 
bad?