A schedule compression technique in which activities or phases normally done in sequence are performed in parallel for at least a portion of their duration.

A logical relationship in which a successor activity cannot finish until a predecessor activity has finished.

A logical relationship in which a successor activity cannot start until a predecessor activity has finished.

A critical path method technique for calculating the early start and elarly finish dates by working forward through the schedule model from the project start date or a given point in time.

The amount of time that a schedule activity can be delayed without delaying the early start date of any successor or violating a schedule constraint.