Logical Relationship

A logical relationship defines how one activity is tied in sequence to another activity or to a milestone, specifying the order and timing of work.

Key Points

  • Shows the sequencing link between two activities or between an activity and a milestone.
  • Common types include finish-to-start (FS), start-to-start (SS), finish-to-finish (FF), and start-to-finish (SF).
  • Leads and lags can be applied to adjust the timing of the relationship.
  • Used to build the network diagram and drive the project schedule logic.

Example

The team cannot start system testing until coding is completed (finish-to-start). Also, the "Regulatory Approval Granted" milestone must occur before construction mobilization can begin.

PMP Example Question

Which logical relationship best describes a situation where testing can only begin after development is complete?

  1. Finish-to-Start (FS)
  2. Start-to-Start (SS)
  3. Finish-to-Finish (FF)
  4. Start-to-Finish (SF)

Correct Answer: A — Finish-to-Start

Explanation: In a finish-to-start relationship, the successor (testing) cannot start until the predecessor (development) finishes.

ICS/OT Incident Response Drills and Exercises

An incident response plan is only a theory until the people who must use it have run it under pressure. This course helps OT engineers, operations leaders, IT responders, and security teams turn a plan on paper into a tested capability.

Define safe states and manual fallback before an incident forces the decision. Build escalation paths, tabletop exercises, and scenarios that expose the gaps a document review cannot find.

Then turn the results into evidence: an after-action report, owned improvements, recovery checks, and a drill cadence that keeps the program alive after the exercise ends.

24 lessons, 2.4 hours. US$47 one-time through HKSM Courses. 30-day money-back guarantee when 50% or less consumed.

Explore the Course


ICS/OT Incident Response Drills and Exercises course preview

Become an AI-First Agile Leader!

HK School of Management and Technology helps you apply AI to Agile work with practical, prompt-based workflows for real-world Scrum challenges. Practical skills, tools, and guidance you can apply right away. Covered by Udemy's 30-day refund policy.

Learn More