Working with Navigation Flows - Oracle ADF 11gR2 Development Beginner's Guide - page 171

An ADF applicaion contains at least one unbounded task low and may contain zero or more
bounded task flows. adfc-config.xml is the unbounded task flow that is used to specify
the unbounded aciviies for the applicaion. This ile will hold the task low call acivity that
would call another bounded task lows in the applicaion. The unbounded task lows have
muliple entry points, which allow them to be bookmarked.
The previous screenshot has the wildcard acivity to represent the muliple entry points.
The control lows are deined to navigate the respecive pages. The warning for the view
acivity is to represent the missing physical ile for the applicaion. Any pages added to
the unbounded task flow are URL-accessible.
By default, the ADF applicaion is provided with an adfc-config.xml file which acts
as an unbounded task low. An unbounded task low can have aciviies and control lows
which are considered public for the applicaion. The aciviies used are explained.
Bounded task flow
This task low will enclose a set of private aciviies and control lows that are reusable
within an applicaion. They have a single entry point and zero or muliple exit points.
The advantages of the bounded task flow over the unbounded task flows are as follows:
Single point of entry : There is no muliple entry for the low and it uses a default
acivity which will get executed before any other acivity in the task lows.
Accept parameters and return values : The task flow accepts parameter values
to be processed within the task flow and returns a value to the calling task flow.