How to connect my mobile to the Android ADT SDK Emulator and then the mobile app to database

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http://stackoverflow.com – I am developing a simple android app using android SDK and simulating it using emulator. I have two questions How will I connect my mobile which is Samsung galaxy ace S5830 to the ADT or emulator to check how my app looks like in the real device. The version is 2.3.3 gingerbread. My next question for you is how will I connect my mobile app to a database to access data from a database to display it in the screen?. It could be any database which is feasible to connect with mobile app. basically I am studying about BI apps and the basic function for mobile BI apps is to fetch data from the data (HowTos)