ws question

hi,

supppose we have a webservice A and a method A.x(). whenever we call A.x(),
A will return something to us. However, when we don't call A.x(), is there
any way that A can run autonomous by itself and change its data? I just
wonder how we could do this....

here is one architecure I can think of

Client <----> webservice A <---> Database <----> [a program B]
a program B, running somewhere, will modify the data of A in the database.
so that we can have something (but not A) running autonomous and changing
the data of A.

however, I just wonder if we can integrate B into A so that we can have like
a thread running at the same time the client request A.x(). then we can
also remove the database also.
Client <---> webservice A(method x, and B)

any opinion is welcomed.

thanks,

duy

I think I know what you are trying to get at and the answer would be yes (sort
of). First remove concepts such as database and webservice and determine
the real 'business' problem. Then add in your persistance and delivery method(s).