CST 316

Process

Junior Project

ProcessProvide necessary points of communication for individual effort.

Allow a controllable division of labor.

Divide and Conquer

Split the drudgery pieces of a project among the team members

No single member does all the “yucky” stuff

Split the cool stuff among the team membersSpread the glory across the entire team

Rapid Development

4-Part Strategy1. Avoid Classic Mistakes – Don’t repeat history

2. Apply sane development fundamentals – What are some?

3. Manage Risks – What are software project risks?

4. Manage time through schedules. Adapt schedules to reflect reality – What is reality?

Rapid Development

Four Dimensions of Software Development 1. People

2. Process

3. Technology

4. Product

Rapid Development

Four Dimensions of Software Development People – Teams will make or break a project. Small

team communication and interaction is a key element in software development.

Small teams of Top Talent are better than larger mixed teams.Fit tasks to skills and motivation of team members.Help team members advance professionally as well as personallyBuild teams of people that compliment and harmonize togetherFace team member problems early and solve them

Rapid Development

Four Dimensions of Software Development Process – The methodology and sequence of events used to

organize software development efforts and extract software development artifacts.Do not over organize process rules (never get caught in “Analysis Paralysis”)Avoid the “All Powerful Process Tsar”Define good development fundamentals:

RequirementsAnalysisDesign/ModelingCoding/ImplementationTesting/QA

Define, track, and handle project risks

Rapid Development

Four Dimensions of Software Development Technology – The “stuff” we use to build a system.

Avoid the “Silver Bullet Syndrome” – “Of all the monsters who fill the nightmares of our folklore, none terrify more than werewolves. They transform unexpectedly from familiar to horrors.”

Technology to solve a problem, seen as a “silver bullet”, can easily become the “werewolf” we wish to eradicate!

This is what is known as the “bleeding-edge” of technology.

Rapid Development

Four Dimensions of Software Development Product – What exactly are we trying to build?

Define system scope What does the customer really want?Where do the boundaries of the system reside?Never build what can be bought or obtained and integrated.

RequirementsGather and catalog what the user wants.Categorize these so the necessary components will be a high priority.Define schedules based on these priorities.

Development Process

Well-defined development processes are important and necessary to achieve the goals.

Well-defined software processes can greatly reduce the cost of fixing errors later in the development cycle.

The key part of development process is everybody on the team has buy-in and the process is well understood.

All approaches are viable and will produce results.

Early Defect Removal

“Software Process”Committing all requirements to writing.

Using a systematic procedure to control additions and changes to the software’s requirements.

Conducting systematic technical reviews of all requirements, designs and source code.

Developing a systematic Quality Assurance Plan in the very early stages of the project that includes a test plan, review plan and defect tracking plan.

“Software Process”Creating an implementation plan that defines the order in which the software’s functional components will be developed and integrated.

Using automated source code control.

Revising cost and schedule estimates as each major milestone is achieved.

Completion of requirements analysis

Completion of architecture and detailed design

Completion of each implementation stage

Development Activity Distribution

Phases of Software Lifecyle

Requirement Phase

Specification/Analysis Phase

Design Phase

Implementation Phase

Integration/Testing Phase

Maintenance Phase

Retirement

Cost of Software Lifecycle

Software Development Activity Distribution

6%8%

16%

40%

20%

10%

RequirementsAnalysis (Detailed Req)ArchitectureConstructionTestingRelease

Software Project Players

Client

Developer

User

Build-and-Fix Model

WaterfallModel(Salmon Model?)

Prototyping Model

IncrementalModel

Synchronize-and-stabilize model

Mainly used by MicrosoftSimilar to incremental model

Interviewing numerous potential customers during requirement analysis phase for a list of features

Divide the features into 3 or 4 builds

Synchronize work from teams

Stabilize each build

Spiral Model