I'm developing a simple app with Android Studio, using Java as the language. Currently, I am implementing the login and logout routine and I have some doubts. 1) Do I need to use some local DBMS written in SQL to access locally registered users for the application to simulate the login act? All data would be fictitious, just for local testing and validating access errors or code syntax. Could you recommend one with better performance? 2) After performing the tests, how should I proceed in terms of making the database available for access via Web services? Can I use the same bank I created earlier, or should I create one using another technology?
I'm not much inside the workings of these logistical access to banks with Android, so my questions can sweat a little pointless. I'm using Ubuntu OS.