I have a question. Assuming I have a web service saving the data in MySQL, this service is responsible for feeding an Android app. The user accessing the app will sync the data to the device's local bank. If the user makes changes and there is no network signal the data will be saved locally and once it is online it will be synchronized (sent) to the web service. How to do this? Once the bank accepted by the android device is SQLite and the web service bank will be in MySQL?