title: Is Azure client ID world wide unique?
body: <p>I have a database table with <a href="https://docs.microsoft.com/en-us/azure/active-directory/develop/quickstart-register-app" rel="nofollow noreferrer">Azure App registrations</a>. These apps are added across different tenants.</p>
  
  <p>I would like to know I can use the application id (client id) of Azure app as the primary key of the table. </p>
  
  <p>Is the client ID world wide unique?</p>