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A Gantt Chart

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Source: Capers Jones, Software Productivity Research. Language. LOC/Function ... Top Down Task Identification. Phases. Phases with. high ... PERT Chart for the ... – PowerPoint PPT presentation

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Title: A Gantt Chart


1
Project Management in the Software Development
Environment CIS490
2
Project management framework
SDLC And Its deliverables
Managing Resources
Project Management
Managing Risk and change
Management Skills
Team Management
Software Economics
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Function Point Estimation Step One
Complexity Description Low
Medium High Total Inputs __x 3 __x 4 __x
6 ____ Outputs __x 4 __x 5 __x
7 ____ Queries __x 3 __x 4 __x
6 ____ Files __x 7 __x 10 __x
15 ____ Program __x 5 __x 7 __x
10 ____ Interfaces TOTAL UNADJUSTED FUNCTION
POINTS ____
15
Function Points Estimation Step Two
Scale of 1 to 5 Data Communications
_____ Heavy Use Configuration
_____ Transaction Rate
_____ End-User efficiency _____ Complex
Processing _____ Installation Ease
_____ Multiple sites
_____ Performance _____ Distributed
functions _____ On-line data entry
_____ On-line update
_____ Reusability _____ Operational
Ease _____ Extensibility
_____ Project Complexity (PC) _____
16
Function Point Estimation -- Step 3
Processing Complexity (PC) ________ (From Step
2) Adjusted Processing Complexity (PCA) 0.65
(0.001 ____ ) Total Adjusted Function
Points _____ ____ (TUFP -- From Step
1)
17
Function Points Estimation Step Three
Adjusted Project Complexity .065 (0.01
Project Complexity) Total Adjusted Function
Points Adjusted Project Complexity TUFP
18
Converting Function Points to Lines of Code
Language
LOC/Function Code Point
C COBOL JAVA C Turbo Pascal Visual
Basic PowerBuilder HTML Packages (e.g., Access,
Excel)
130 110 55 50 50 30 15 15 10-40
Source Capers Jones, Software Productivity
Research
19
Estimating Effort
  • Function of size and production rate
  • COCOMO model

20
COCOMO Estimation Calculation
Effort 1.4 thousands-of- (in
Person- lines-of-code Months) Example If
LOC 2000 Then... Effort (1.4 2000)
28 Person Months
21
Estimating Schedule Time
  • Rule of thumb for estimation

Schedule Time (months) 3.0
person-months1/3
22
A Workplan Example
23
Top Down Task Identification
Phases with high level steps
Phases
24
A Gantt Chart
25
A PERT Chart
26
PERT Chart Showing Activities and Sequence
27
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PERT Chart for the SPTS Project
29
Viewing Project Information as a PERT Chart in
Microsoft for Windows
30
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31
Boehms top ten risk items
  • Personnel shortfalls
  • Unrealistic schedules and budgets
  • Developing the wrong functions
  • Developing the wrong user interfaces
  • Gold-plating
  • Continuing stream of requirements changes
  • Shortfalls in externally-performed tasks
  • Shortfalls in externally-furnished components
  • Real-time performance shortfalls
  • Straining computer science capabilities

32
Risk management requirements
  • Risk impact the loss associated with the event
  • Risk probability the likelihood that the event
    will occur
  • Risk control the degree to which we can change
    the outcome
  • Risk exposure (risk probability) x (risk impact)

33
Three strategies for risk reduction
  • avoiding the risk change requirements for
    performance or functionality
  • transferring the risk transfer to other system,
    or buy insurance
  • assuming the risk accept and control it
  • risk leverage difference in risk exposure
    divided by cost of reducing the risk
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