2.2.2. Presentation Related Policies

PRESENTATION.  Determines how change messages are presented to application.

coherent access

group change messages into explicitly delimited transactions

ordered access

preserve order of change messages

access scope

scope access options

INSTANCE

access options apply at instance scope

TOPIC

access options apply at Topic object scope

GROUP

access options apply at Publisher or Subscriber object scope

DESTINATION_ORDER.  Determines how to handle concurrent updates.

BY_SOURCE_TIMESTAMP

value with highest source timestamp will be visible

BY_RECEPTION_TIMESTAMP

value with highest reception timestamp will be visible