System Requirements for GIS (Part 2)

1
System Requirements for GIS(Part 2)

• GEOG 463
• 4/16/04

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Six Aspects of System Requirements Report

• Data requirements
• Software requirements
• Hardware requirements
• Personnel (resource) requirements
• Timing
• Institutional arrangements

3
Data Reqs Objects to Tables
4
Project Management Tools

• Several graphical tools to help manage project
  time, people, and other resources
• The purpose of these tools is to
• Identify project tasks and subtasks
• Communicate expected and task duration
• Allocate people and resources to tasks
• Show dependencies between tasks
• Two most common are
• Gantt Charts (timelines)
• PERT Charts

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Gantt Charts

• Gantt charts are bar graphs that help plan and
  monitor project progress and resource allocation
  on a horizontal time scale
• At a minimum Gantt charts show project tasks with
  a corresponding bar representing the expected
  task duration

www.smartdraw.com
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Gantt Charts Cont.

• A complete Gantt chart will indicate
• Personnel assigned to each task
• Column next to tasks
• Resources (e.g., , software) for each task
• Next to personnel

• Task dependencies
• Actual vs. planned
• duration
• Actual vs. expect
• milestones

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PERT Charts

• PERT Program Evaluation Review Technique
• A detailed technique for maximizing project time
  efficiency
• Also used to determine the critical path
  (Critical Path Method)
• PERT charts describe
• Project activities or tasks
• Task (activity) duration
• Optimistic, most likely, and pessimistic
• Task sequence and dependencies

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PERT Chart Styles

• Activity on Arrow
• Arrows labeled with task and duration

B
D
A
2w (1-3)
E
3w (2-4)
C
1week (0.5-3)
E
1w (0.5-2)
1w (0.5-2)
1w (0.5-2)
4w (2-6)

• Activity on Node
• Nodes labeled with task, duration, and resources

Task A Cheryl 1w, 2w, 3w
Task B Ron 2w, 3.5w, 6w
Task C Kate 1w, 3w, 5w
Task D Eric 4w, 6w, 8w
Task E All 1w, 3w, 5w