Karel Riveron Escobar <kescobar(at)estudiantes(dot)uci(dot)cu> writes:
> I have a question. I think it's so simple to answer but I don't know anything about that. I want to know what is the comunication protocol among PostgreSQL database server and an application server like Apache. I have to know that because I'm designing a simple deployment diagram and I just need it for finish.
The protocol the PG server understands is specified here:
http://www.postgresql.org/docs/9.2/static/protocol.html
regards, tom lane