Editing Dependency (project management) (section)

=== Maximal-type relationships ===
Activity A and Activity B are said to have a Maximal-Type Relationship, if Activity B can start after Activity A, but with the delay of no more than X.<ref name=PROJACK/> Real life examples, which are simulated by Maximal-Type Relation:
* Shoring of the trench has to be done not necessarily immediately after excavation, but within certain time, otherwise the trench will collapse.
* Vaccination of baby has to be done not immediately after birth, but within certain time
* Renewal of the passport has to be done some time after the current one has been issued, but before it expires.
* Invoice payment does not have to be done immediately, but within certain time after it has been issued.

Maximal-type relationships are rarely implemented in the project management software, most probably because with this feature it is too easy to create contradictory dependencies.