You will first complement any simple idea , for which database systems would be required. You will then design the underlying database and define the application functionalities you will provide with the database. Lastly you will implement this application, build and populate the underlying database systems, and write the code needed to embed the database in the application.
you should use CouchDb to develop a mobile application based on our agreement
it should have storing, updating, retrieving / querying the database.
*** open source code for the app or DB is ok
*** should be submitted withing two day maximum