I've got a question about a database application I plan to write.

Original freeware/ shareware database about let say: "Cars".

Independent user 1, add some "Cars" to their database.
Independent user 2, add some "Cars" to their database.
Independent user 3, add some "Cars" to their database.
Independent user 4, add some "Cars" to their database.
Independent user 5, add some "Cars" to their database.

Can all these users export their newly data to our server ?
And will it be possible for my application too process this into a new update for this original
database ?

This application is going to be written by some external programmer, using delphi 3 Pro. Do we need
new software or orther tips are extremely welcome.

Regards from The Netherlands,

If I understood what you want to do, you have some kind of distributed
database system. First collect the data to several workstations/databases,
send them to server, combine and process it, and then send it back to the
workstations. If you want to quarantee that you are not losing data, and
the database also stays consistent, then this is *not* an easy task to do.

If you can find some other solution than using any 'self-made' distributed
database systems, use it. Or else, be prepared for a longer project.