What is the concept of Database in Android?
<p>I want to know the concept of database in Android. As I understand that using <code>SQLite database</code> we can make , update database but I am unable to understand that how the <code>sign-in</code> option will be added to  <code>Android app</code>. Will it be an app that will be work as a server? And the data of login user will come from server?</p>