title: How to check if the given name exists in firebase realtime database in android studio?
body: <p>How to check that if the given name exists in "FacultyMember" record. 
  If the given name is found in the record then I want to retrieve its parent (that is uid) other show a message name not found. How can I do it in the android studio?
  This is my database structure.
  Thanks</p>
  
  <p>[<img src="https://i.stack.imgur.com/5r4bh.jpg" alt="This is my database Structure."></p>