Persistent Classes Persistent Classes A persistent class is any class that inherits from %PersistentOpens in a new tab. A persistent object is an instance of such a class.The %PersistentOpens in a new tab class is a subclass of %RegisteredObjectOpens in a new tab and thus is an object class. In addition to providing the object interface methods, the %PersistentOpens in a new tab class defines the persistence interface, a set of methods. Among other things, these methods enable you to save objects to the database, load objects from the database, delete objects, and test for existence.
