Android Database

I currently have an android application on the market that needs upgrading and redesigning. I have full access to the original source code however it may be easier to start over. I need a database designed to keep track of various fields, the application should be designed to feel native to the android OS. It will consist of about 7-8 various forms and have fields which will need to be calculated, displayed backed up etc. It will need to have reporting options way to backup data, restore data, archive data, and print data. The application will keep track of times, whom you worked with and tons of info about the job. Be able to handle some calculations as well as keep track of pay and expense information and display all this in a appealing way run reports based on the data