maximum number of databases and / or schemas in a single database instance

The following page:

http://www.postgresql.org/about/

mentions some limits but not the following:

[1] maximum number of databases per database server instance
[2] maximum number of schemas per database

Is there empirical information on whether both these values can be as high
as a few hundreds? (I don't really need any more for my use case)

Thanks,
Menelaos.