This is not an Excel question; it is a legal question.
In the past I have subscribed to a service which sent me a CD each year with
a database which I could search.
You will need the other parties to sign a contract with a non-disclosure
agreement so they do not give away your product or the data in it.
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
remove caps from email

"Ra" wrote in message
...
I have created a database which I would like to licence. Is it possible to
set up a licence for using an excel database on a yearly basis? If yes,
can
you please let me know how this can be done?

Many thanks