Adam Ruppe wrote:
The way I'd do it is:

interface Database {
   // support shared functions here, and other stuff useful enough to
   // warrant emulation
}

class Postgres : Database {
   // implement the interface, of course, but also all other postgres
   // specific stuff
}


When you go to use it, if you're  happy with the basics, declare
Databases.

If you need something special, use Postgres objects.

+1

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