Explicit Message Passing . A global database contains one instance of every distributed object. Processes can have a local instance of this object. A read method of the object can be used to update the local object, a write method updates the object in the database. For a closer look on distributed objects see chapter 5 .
Distributed objects are a small subset of mailbox objects.
The local object can access the instances in the database. To learn more about mailbox objects see chapter 6 .