title: Login using email stored in firebase realtime database
body: <p>I am developing an android App in which I implemented Firebase realtime database. And now I want to login using by email id and password which stored in database. I know firebase auth can be use for authentication but I want to login using realtime database like we do in Sql or my sql.</p>
  
  <p><a href="https://i.stack.imgur.com/o4J8E.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o4J8E.png" alt="database"></a></p>