Mango release adds a local database engine to the device. The database engine on the phone is based on SQL CE engine. Mango applications use LINQ to SQL for all database operations. LINQ to SQL provides an object-oriented approach to working with data and is comprised of an object model and a runtime. The database files stored in Isolated Storage on the phone and available to the application only (which means applications cannot share same database). Suggested scenarios for local database usage in...