Developing the Project Schedule: Strategies and Key Techniques
PMBOK v8 Definition
Developing the project schedule involves analyzing activity sequences, durations, resource needs, and schedule constraints to create a project schedule model for execution, monitoring, and control. It is a core activity within the Planning Performance Domain, closely tied to the Schedule Management processes.
Why It Matters for the Exam
Schedule development is a frequent exam topic because it integrates multiple knowledge areas (Scope, Resources, Cost) and is central to project performance. Questions test your ability to select the correct scheduling technique, interpret schedule metrics, and understand the inputs and tools used to create a realistic and usable schedule.
Key Points to Remember (for the exam)
- Primary Objective: To create the project schedule model, which is used to generate the formal project schedule, a key baseline for the project.
- Core Inputs: Key inputs include the scope baseline (from scope decomposition), project schedule network diagram (showing logical relationships), and resource requirements.
- Essential Tools: Critical tools include data analysis (like alternative analysis), schedule network analysis, and agile release planning for adaptive approaches.
- Key Output: The main output is the project schedule itself, which includes planned start and finish dates for project activities.
- Flexibility is Key: The schedule should maintain flexibility to accommodate changes; this is a principle emphasized in PMBOK v8.
- Monitoring Link: The developed schedule is directly monitored using metrics like Schedule Variance (SV) and Schedule Performance Index (SPI).
- Reserve Use: Schedule development includes determining schedule reserves (contingency) as part of reserve analysis.
Typical PMI Exam Example
You are a project manager developing the schedule. Your team has provided activity durations and dependencies. You are now analyzing different scenarios to compress the schedule without increasing risk. Which data analysis technique are you most likely using? (The correct answer would be "Alternative Analysis").
PMI Exam Traps
- Trap: Thinking the "project schedule" and the "project schedule model" are the same. Reality: The model is the tool (e.g., a software file with all data and logic) used to generate the schedule (the specific timeline output).
- Trap: Believing schedule development is a one-time activity at the start of the project. Reality: It is an iterative process, especially in adaptive life cycles, and is updated as the project progresses.
- Trap: Confusing schedule management planning (defining the how) with schedule development (creating the schedule). Reality: Planning (Plan Schedule Management) comes first to establish the approach; development (Develop Schedule) executes that approach to create the timeline.
- Trap: Assuming all schedule constraints are mandatory. Reality: Part of schedule development is analyzing and challenging constraints to ensure flexibility and realism.
Important PMI Connections
| Related Concept | Relationship Type | Exam Attention Point |
|---|---|---|
| Scope Baseline | Critical Input | The Work Breakdown Structure (WBS) and scope definition provide the activities to be scheduled. Scope decomposition is foundational. |
| Critical Path Method (CPM) | Key Technique | A primary tool for schedule network analysis. Know how to calculate and interpret the critical path for schedule flexibility. |
| To-Complete Performance Index (TCPI) | Performance Measure | While TCPI is a cost metric, it is influenced by the schedule. Exam questions may link schedule slippage to the TCPI calculation for the remaining work. |
| Risk Management | Informs Reserves | Schedule development uses reserve analysis to incorporate contingency time buffers for known-unknowns, which is a risk response strategy. |
Quick Review Questions
- What is the primary output of the Develop Schedule process?
- Name one key data analysis technique used specifically during schedule development.
- True or False: The project schedule model and the project schedule are identical documents.
- Which baseline is a fundamental input for defining the activities to be scheduled?
- If a project manager is analyzing different scenarios to shorten the project duration, what specific analysis technique are they using?
PMBOK v8 Reference
Section 2, Project Management Performance Domains, specifically within the discussion of the Schedule Performance Domain and its associated processes.