i need to construct a database into which data is entered on the web (for sales people). while that is straight forward with php/mysql, i also need a solution that would allow them to enter data even if they can't access the web/data server, a local cache of sorts, that would sink with the server as soon as a connection appeared. Are there clients like that already? is there a pointer on writing one? i imagine php won't save me this time, but this is a good place to start and to scrounge for ideas.

regards,

UrbanAchiever