I almost developed a store automation (POS) application using
Firebird embedded Server.

Database is efficient, small footprint and great.

With support of embedded nature each exe along with fdb will be
shipped.

Here my question is, My customers are store owners. I mean single
store owners. They can buy the software and use without any problem.

If multiple store owner wish to buy my application, how would I
integerate.

For example:

If a store owner buys 4 piece of my software and runs in all his
four stores, later he might ask me, how to network all his four
stores database. He is happy with the individual store databases but
if he wants to view the four store database as a unified one single
database, then how could I provide this solution.

Any ideas is highly appreciated.

Regards,

Muthu Annamalai