APPLICATION DEVELOPMENT

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APPLICATION DEVELOPMENT

• BY
• SYED ADNAN ALI

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What is an Application Development?

• An application is defined as a program that gives
  a computer instructions, that provide the user
  with tools to accomplish a task.
• Development of such an application is known as
  Application Development

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How can we develop an application?

• By adapting following or some other methodologies
  and
• System frameworks
• System Development Life Cycle (SDLC)
• Microsoft Solution Framework (MSF)
• Software Houses own methodologies and processes

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System Development Life Cycle (SDLC)
1. Planning
7. Maintenance
2. Analysis
6. Deployment
5. Testing Debugging
3. Design
4. Coding
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Microsoft Solution Framework (MSF)
1. Envisioning
5. Deploying
2. Planning
4. Stabilizing
3. Developing
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Example of Application Development

• EVTEK Marketing Web Application

Participates in fairs and other gatherings
etc. Visits high schools, professional schools,
training camps etc.
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EVTEK Marketing website

• An Application for Evtek
• Administration
• posts new activity tasks
• approves, update, delete members
• updates members activity register
• coordinates with members
• Others
• Member
• registers to the system
• signs-up for activities
• Updates activity registers
• coordinates with administration
• others

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Important Terms

• Below are some important terms being used in the
  presentation
• Client or customer
• (A person or a company whose software is being
  developed)
• Developer
• (The company or a person who is developing the
  software)
• milestones
• (Milestone is a terminal element that marks the
  completion of a
• work package or phase)
• deliverables
• (Documents or files delivered to the client or
  customer at the end
• of each stage)
• Bug and Debug
• (Really a bug!)

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1. Planning

• Creating a broad description of the goals and
  constraints.
• Problem definition
• Team creation
• Meeting
• Requirement analysis
• Analysis of manual or current work
• Analysis of documents
• Meeting with concern people
• QA

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1. Planning

• Milestones
• Core team organized
• Vision/scope created

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1. Planning

• Deliverables
• Solution Concept Report show

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2. Analysis

• What to develop and how to create the solution?
• Designed scenario
• User profile
• System analysis
• Business requirements
• (Time, cost, record keeping, searching, decision
  making etc.)
• System requirements
• (Hardware and software from users and developers
  point of view)
• User Requirements
• (Who can be a user. Skills and requirements for
  the users.)

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2. Analysis

• Milestones
• Master plan complete
• Technology validation complete

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2. Analysis

• Deliverables
• Project structure
• (e.g. use case diagram, specifications etc.) show

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3. Design

• Three main design stages are
• Conceptual Design
• from Users and business perspective
• (overview of project ,nature of business, look
  and feel of application etc.)
• Logical Design
• from developer or project team perspective
• (sequence of tasks, flow of activities, inputs
  and outputs, classes etc.)
• Physical Design
• from developers perspective
• (database design, interface design etc.)

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3. Design

• Milestones
• Functional specification complete
• Development and test environment setup

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3. Design

• Deliverables
• Functional specifications
• (sequential diagrams, activity diagrams, class
  diagrams, Entity relationship diagram, Data
  dictionary etc) show

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4. Coding

• Creating and documenting the code that implements
  the solution.
• Starting development
• Creating a prototype application
• Developing solution components
• Building the solution

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4. Coding

• Milestones
• Proof-of-concept application complete
• Internal builds complete

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4. Coding

• Deliverables
• Source code and execution files
• Installation scripts
• Configuration settings for development
• Finalized functional specification
• Performance support element
• Test specification

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5. Testing and Debugging

• Identifying, prioritizing and resolving issues so
  that the solution
• can be prepared for release.
• Testing the solution
• (implementation of test plans for validation)
• Component testing
• Database testing
• Infrastructure testing
• User acceptance and usability testing
• Stress capacity and performance testing
• Record the number of bugs
• Conducting the pilot
• (Deployment of solution in a staging area and
  testing)

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5. Testing and Debugging

• Milestones
• Bug convergence
• Zero-bug release
• Golden release

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5. Testing and Debugging

• Deliverables
• Final release
• Release notes
• Performance support elements
• Test results and testing tools
• Source code and executable files
• Project documentation

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6. Deployment

• Deploying of solution technology and site
  components, stabilizing
• the deployment, transfers the project to
  operations and support
• and obtaining final customer approval of the
  project.
• Completion of deployment and operations
• (obeying formal documentation of deployment and
  operations)
• Deployment and stabilization
• (completion of actual component and site
  deployment)
• Project review
• (completion of post-project reviews with the
  customer and project team)

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6. Deployment

• Milestones
• Core components deployed
• Site developments complete
• Deployment stable

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6. Deployment

• Deliverables
• Operation and support information systems
• Procedures and processes
• Knowledge report and log-books
• Documentation
• Training plan
• Project completion report

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7. Maintenance

• Maintaining and enhancing the system by creating
  new
• versions.
• New requirements by user
• New requirements by business
• Internal or external change by change in laws,
  legislations and policies
• Advent of new technologies
• Complete SDLC is followed again and again

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7. Maintenance

• Milestones
• Basic structure assurance
• Change stability
• Deployment stability

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7. Maintenance

• Deliverables
• History logs
• Maintenance reports
• Release notes
• New version documentation

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References

• Books
• Analyzing Requirements and defining Microsoft
  .Net Solution Architecture (By Microsoft Press)
• Patterns, Models, and Application Development (By
  Julio Sanchez and M. P. Canton)
• Internet
• www.google.com
• devresource.hp.com
• gates.comm.virginia.edu

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Thank you very much

• Produce for

By
Application Development Course (Jaana Holvikivi)
Syed Adnan Ali (CAP04)