title: KeyCloak with Custom DB. Is it possible to back keycloak with cutom-db without keep syncing it with KeyCloak DB?
body: <p>Is it possible to use keycloak with custom DB? E.g. we have a database where we have all the users and their password. Can we use keycloak with that database or do we need to add each user to keycloak and have to keep our-user-db and keycloak-db in sync ? </p>