What type of relationship indicates that a successor task cannot be completed until the first task is completed?

In project management, the relationship where a successor task cannot begin until the first task has been completed is known as a Finish-to-Start relationship. This means that the first task must finish before the second task can start, creating a sequential dependency between the two tasks. This type of dependency is crucial for project scheduling as it helps in mapping out the order of operations needed to complete the project efficiently.

To clarify further, a Start-to-Finish relationship implies that a successor task can only finish after a predecessor task has started, which is quite different from the relationship being described. Start-to-Start relationships indicate that two tasks can start simultaneously, while Finish-to-Finish relationships denote that two tasks can only finish at the same time. Both of these do not accurately represent the dependency system where the completion of one task directly impacts the start of another. Thus, the appropriate designation for the scenario described is indeed a Finish-to-Start relationship.