text: --supprimer une table
  delete from tables where numeroTable='';
  
  --supprimer un plat
  delete from Article where nomArticle = '';
  
  --supprimer client
  delete from Client where numeroClient= '';
  
  --supprimer service
  delete from Service where typeService= '' and dateService='';
  
  
  --supprimer reservations
  delete from Reservation where numeroReservation='' ;
  
  