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Mobile application developers face two kinds of difficulties due to weak connectivity: dealing with heterogeneous data access models and performing data synchronization. This paper explores how a combination of AJAX application and Atom data models, widely used for on-line applications, can help ease these challenges. This is achieved through a local proxy and synchronization architecture called BITSY. The paper also describes Atom-DB, a browser plug-in implementation of BITSY. They show how by using BITSY, existing applications can be made resilient to intermittent connectivity without any application changes. These benefits are verified using two Web applications, one synthetic application and another existing third-party application.
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