Oracle ADF Task Flow concepts: Bounded and Unbounded Task Flows

ADF controller is an extension of java surfaces.
Bounded Task Flows:
-> They are reusable "whiteboxes" which provide navigation and processing.
-> Well defined boundary
-> Single point of entry
-> Can invoke code at the beginning of the task flow or at the end of the task flow allowing roll back or committing the changes accordingly.
-> Declarative transaction management.
-> Declarative back button support.
-> Bounded task flows communicate with the input/output parameters.

Unbounded Task Flows:
-> There are no well defined bounderies. There is no entry point or an exit point from an unbounded task     flow.
-> Usually used as a top level entry point.
-> They are used to declaratively use menu models.
-> Declarative bookmarking of the view activities.