Android : how to store android application database in every device as well in web server

I am developing an android application in which i used SQLite database to store user registration details.I am creating application in Eclipse Juno.I am running my android application in emulator as well as physical device. What I noticed is that a data of database file under /data/data/mypackage/databases/dbname.db is different in emulator as well as in phisical device. It seems like it stores the data for that particular device only. My question is how can I store all users data in single database file independent of particular devices and its db files as a owner of my android application. Because it is necessary for me that i can keep record of all users of my application. So is there any solution for this.I searched google for this but not get any idea. thanks in advance