title: SHA certificate firebase Debug/Release
body: <p>My android app is using firebase realtime Database,
  i've putted the app debug SHA certificate fingerprints , and when I test my app with debug mode it works and I get data from DB , now when I want to sign and release the app , " what i've done with my previous app : I delete the debug SHA certificate fingerprint from firebase project console and then I put the release SHA certificate fingerprint and the app is on the market now and it's OK" 
  but I want to know :</p>
  
  <p>Q1)when I deleted the debug SHA certificate fingerprint with the release one , it will still work when I run my app in debug mode ? </p>
  
  <p>Q2) should i put debug and release SHA certificate fingerprint in the firebase console ?</p>
  
  <p>Q3) If i put debug and release SHA certificate fingerprint in the firebase console then download the new configuration file provided from firebase , my database connexion will still work either on release and debug mode ?</p>