Synchronization of clientside domain-model with server-sidedomain-model

[Database Administrator]

Hello everybody,

I am not sure if this is the right newsgroup to post to... .

I have a Java application which communicates with an ejb-server
(jboss). Now there is a domain-model on the client which has to be
mapped to a part of the domain-model in the server.

The client-model is persisted in a local db.
How would you approach the syncronization of these two models? One can
do this on the application level, e.g. sending an object graph to the
server, the server unmarshalling and so on or one can syncronize on
the database level in some sort of a partial replication.

Could you please tell me what the disadvantages of a sync on the
database level are? Just in general. And how would you approach this
sync problem?

thx,
harald