Software Development Models

Application Development

• A software lifecycle model is used to describe the different stages required to create a software product.
• The Waterfall method is like a one-way street, once a stage in the process is completed, you cannot go back to the previous stage.
• This method assumes that the project requirements are clearly defined and there is a shared understanding between the customer and project manager.
• Advantages of the Waterfall method:
  • Provides a structured and meticulous approach to development.
  • Suitable for large projects where requirements are stable.
  • Useful for training junior programmers.
• Disadvantages of the Waterfall method:
  • Difficult to accommodate changes in requirements.
• When is the Waterfall method best suited?
  • When there are minimal anticipated changes to the project.
  • When the budget is fixed.
  • When the project is similar to a previous project completed by the team.

Agile Development

• Agile development is a more flexible method that involves iterative development cycles called sprints.
• The team is responsible for managing the development process and adapting to changes.
• Sprints: Short timeframes (usually 2-4 weeks) where a specific set of features are developed and delivered.
• Advantages of Agile Development:
  • Cost-effective by minimizing unnecessary work and streamlining processes.
  • Encourages collaboration within the team.
  • Short lead times between prototypes and iterations, increasing flexibility.
• Disadvantages of Agile Development:
  • Requires a strong team with high levels of collaboration.
  • Not suitable for large teams.
• When is Agile Development best suited?
  • For projects that can be broken down into smaller, manageable sprints.
  • When the customer is involved in the process but does not require constant updates.
  • For projects with limited budgets.

Database Application Development

• Applications that are built around a central database of information.
• Functions enable users to:
  • Retrieve, sort
  • Calculate
  • Report on data.

Rapid Application Development (RAD)

• RAD is a fast-paced approach to software development focusing on rapid prototyping and iterative feedback.
• The goal is to build and deploy software quickly and adapt to changing requirements.
• Steps involved in RAD:
  • Define Requirements
  • Prototype Development
  • Feedback Collection
  • Finalization of Software
• Advantages of RAD:
  • Promotes early involvement and feedback from customers.
  • Fast development cycles.
  • Minimizes risks and rework.
• Disadvantages of RAD:
  • Limited scope, best for projects with well-defined requirements.
  • Requires experienced developers who can make quick decisions.

Mobile Application Development

• Focuses on creating applications specifically for mobile devices.
• Design considerations are tailored for touch screens, mobile operating systems, and user interactions expected on smaller screens.

Business Process Application Development

• Focuses on creating applications that streamline business processes, such as:
  • Approvals
  • Routing
  • Data integration

Business Process Automation (BPA)

• The use of technology to automate repetitive tasks or processes within a business.
• Aims to reduce manual effort and improve efficiency.
• Benefits of BPA:
  • Increased efficiency
  • Reduced errors
  • Improved compliance
  • Enhanced customer satisfaction
  • Streamlined operations
  • Stepping stone to digital transformation
• What business processes can be automated?
  • High-volume tasks
  • Tasks involving multiple people
  • Time-sensitive tasks
  • Processes with a significant impact on other systems or processes
  • Processes that need audit trails for compliance.

Explore different software lifecycle models, focusing on the Waterfall method. This quiz examines its advantages, disadvantages, and when it is best suited for a project. Ideal for understanding structured approaches in software development.