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Software SYSTEMS DEVELOPMENT

This guide simplifies the software development process by detailing the project lifecycle and essential time management practices. Key topics include Activity Definition, Sequencing, Duration Estimation, Schedule Development, and Control. The Work Breakdown Structure (WBS) method and the three-point estimation technique are discussed for better resource allocation. You'll also learn to use performance metrics like Schedule Variance (SV) and Cost Variance (CV) to monitor progress. Ideal for project managers and development teams, this resource emphasizes collaboration and effective communication throughout the project lifecycle.

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Software SYSTEMS DEVELOPMENT

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  1. Software SYSTEMS DEVELOPMENT 4: System Design

  2. Simplified view on software product development process

  3. Project Lifecycle

  4. Project Time Management • Activity Definition • Activity Sequencing • Activity Duration Estimation • Schedule Development • Schedule Control

  5. Activity DefinitionWork Breakdown Structure(WBS)

  6. Resource Allocation

  7. Duration Estimation 3 points method • a= the best-case estimate • m = the most likely estimate • b = the worst-case estimate • E = (a + 4m + b) / 6

  8. Activity Sequencing Precedence Diagram Method(PDM)

  9. Schedule DevelopmentGantt Chart

  10. Schedule Control PV=BCWS - Budgeted Cost of Work Scheduled AC=ACWP - Actual Cost of Work Performed EV=BCWP - Budgeted Cost of Work Performed • In time units: • PV = Planned Work Time for Planned Work • AC = Time Actually Spent • EV = Planned Work Time for Work Done

  11. Some Derived Metrics • SV: Schedule Variance (BCWP-BCWS) • A comparison of amount of work performed during a given period of time to what was scheduled to be performed. • A negative variance means the project is behind schedule • CV: Cost Variance (BCWP-ACWP) • A comparison of the budgeted cost of work performed with actual cost. • A negative variance means the project is over budget.

  12. Some More Derived Metrics • SPI: Schedule Performance Index • SPI=BCWP/BCWS • SPI<1 means project is behind schedule • CPI: Cost Performance Index • CPI= BCWP/ACWP • CPI<1 means project is over budget • CSI: Cost Schedule Index (CSI=CPI x SPI) The further CSI is from 1.0, the less likely project recovery becomes.

  13. SoW: Statement of Work • Deliverables: What will be delivered? • Brief description (source: SRS) • Activities: What should be done? • Brief Description (source: WBS) • Timeline: When it will be done (Milestones)? • Milestones Dates (source Gantt)

  14. Assignment: Project Plan • Project Management Team vs. Development Team • Customer plays PM role • Jointly define the scope with development team • WBS • Stop when work package can be reliably estimated • Don’t forget non-coding activities (testing, bug fixing) • Gantt Chart • Milestones/Deliverables each week • Dependencies, time and resource allocation • SoW • 2 page brief • Project/Milestones scope

  15. Weekly reports by PM team • Each week after the project kickoff • PM team: project status and metrics (10 minutes) • Development team: milestone demo (10 minutes) • Project Start Date: 23/05/2010 • Duration: 4 weeks • Reduce scope if needed.

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