Android Client/Server model

I have mobile application senior project called,"Traffics on Road to Atilim." In this application, user can create or update traffics event such as car accident, road under construction. Application will take GPS cordinates of user and insert event on google maps. Other user can see this event via google maps.

Problem is that android SQL lite is not based on server/client model and I think, I need that model for this application. Here is our application ER-diagram

My quistion is how can i implement client/server model in android application? I can or not? If i can not implement do i have to sycn oracle database server via SQL lite ?

I'm answering my question because of people who face with android database connection. I have been researching this subject for 6 days and i have find best way is that usingweb service. I chosee web service with JAVA axis2.

Here is a link that show how to implement web service

here android android web service client tutorial

I succesfully did android web service client with java implemented web service using this tutorials. But i need MS database 2008 implements now if anyone know i will appriciate that. Thanks