Abstract: A method for sharing data between an occasionally connected device and a remote global database is disclosed. The occasionally connected device receives data from a remote global database. The data is accessed by a user in an online mode. The data is stored in the form of one or more screen instances in a local database of the occasionally connected device. The one or more screen instances capture contents of a screen accessed by the user, and the one or more screen instances are last viewed instances of the screen accessed by the user. Further, the one or more screen instances are updated in the offline mode by querying the local database of the occasionally connected device. The one or more updated screen instances are synchronized with the remote global database to update the data stored in the remote global database corresponding to the one or more screen instances.

Abstract: The invention provides system and method for deployment and maintenance of lightweight local databases on the Occasionally Connected Devices (OCD) and synchronization of data between the local database and the remote global database (RGDb). The database to be accessed by the user is generally located on at least one remote server. As the OCDs are intended for offline use, a module for local data handling is provided. This module for local data handling is a lightweight non-relational database. The data is stored in the form of objects on the OCD. Each such stored object is captured in the form of a screen instance disposed at the OCD when the user is online. The present invention provides screen based non-relational data sharing, wherein screens are means to capture and display the data shared in an online mode and invoke the data from the stored objects in an offline mode.