In project scheduling, tasks that must be performed in a specific order due to legal or contractual requirements are an example of which type of relationship between activities?
Resource
Mandatory
Discretionary
External
Tasks that must occur in a specific sequence because of legal, contractual, or inherent project constraints are known as mandatory dependencies or hard logic. These dependencies are unavoidable and dictated by the nature of the work. Discretionary dependencies, on the other hand, are based on the project team's preferences or best practices and can be altered if necessary. External dependencies involve relationships between project activities and external events or conditions outside the project's control. Resource dependencies are related to the availability of project resources and may affect scheduling but are not due to the inherent nature of the tasks.
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