I have a project which has all entities as JPA entities. I would like to make use of indexing, which I know that it's not available in JPA, but ObjectDB works with JDO as well.
Question1: will adding JDO @Index in a JPA entity have any effect or I have to switch that entity to JDO?
Question2: switching entities from JPA to JDO can happen when there is already data in the database? Or do I have to delete the previous data and start with a fresh db?