title: How to build Graphql backend server for existing database?
body: <p>I have just build simple Node.js graphql backend server with Prisma, graphql-yoga, prisma-binding.
  And I would like to know if is it possible to create graphql backend server for existing database.
  For example, I am deploying Postgresql database in amazon RDB,  and it is not empty database.
  In this case, </p>
  
  <ol>
  <li><p>How can I build backend server using Graphql and Node.js for existing database?</p></li>
  <li><p>Graphql backend server building is possible for only newly created database or available for existing database?</p></li>
  <li><p>If I would like to deploy graphql database on specific cloud system(for example godaddy), is it possible and how to do it?</p></li>
  </ol>
  
  <p>Thanks!</p>