replication

Hi list,

My architecture will be composed by a central server and several satellites
(POS); the central will have all satellites stock into one DB and its own
items too.

As we sometimes can have internet failure, I'd like to also have local
databases into satellites (only with their own items) to continue sales, and
resynchronize as soon as the failure is fixed with the central.
(and IF possible, synchronize bidir, as the central also is able to sell
satellites items.)

How could I achieve this? (there's no third party software between clients and
server.)

JY
--
I'm glad I was not born before tea.
        -- Sidney Smith (1771-1845)