Test suite for PL/pgSQL
Scenario:
A building with a modern TP cabel installation where any
of the wall connectors can be used to plug in phones,
ethernet interfaces or local office hubs. The backside
of the wall connectors is wired to one of several patch-
fields in the building.
In the patchfields, there are hubs and all the slots
representing the wall connectors. In addition there are
slots that can represent a phone line from the central
phone system.
Triggers ensure consistency of the patching information.
Functions are used to build up powerful views that let
you look behind the wall when looking at a patchfield
or into a room.
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