[Zope] Db connectivity with zope

[Hamzat kamal]

The Zope Experts,

I am a new user in zope, then there is a need for me to incorporate an
existing database of an org. into their newly design website so that user
can query the database. Presently i don't know any single thing on how to
do this. But before i started craking my brain i want to you to give me the
fundamental concept of how this thing work.

Tkanks in anticipation for your supports.

Hamzat kamal