synchronize data only between local database and remote database

synchronize data only between local database and remote database

Hi all,

I have a web application published to remote server. user use it in case of internet existance.

there is another published version on local pc "sql server express 2008" . in case of there is no Internet connection ,user will use it from local pc.

how can i update remote database with new data of local database when there is no internet connection?

thanks