Data Definition: Activity Constraint
Form Label (Field Label): Constraint
# of Characters: Not applicable
Where to use it: Schedule sheets
Use this element for: Gathering constraint information about an activity.
Pull-down Menu (Drop-down list) for selecting a constraint between activities on a schedule sheet.
A constraint ties a successor activity start date to a predecessor activity completion date, after observing dependencies and lags.
The available constraints in Unifier are As soon as possible (ASAP) and None:
As soon as possible: If the start date of a predecessor activity changes, this option either pulls in or pushes out the start date of an ASAP-constrained successor activity accordingly. If an ASAP-constrained activity does not have a predecessor, the schedule sheet start date determines the activity start date; un-started ASAP-constrained successor activities align accordingly.
None: The start date of a None-constrained activity does not change if the start date of a predecessor activity changes. The schedule sheet start date does not determine the start date of None-constrained activities that do not have predecessor activities.
When the schedule sheet is imported, Unifier sets all values to None; the user must set any desired activity constraints.
This DE is available for user-defined reports (UDRs) and data views.