Version control systems
Introduction – About the Version Control System A version control system is a system that records changes to a file or set of files over time and allows you to return to a specific version later. Local Version Control Systems A lot of people copy files to a different folder (sometimes with a date and…
Ski jumping
Project Tasks: Gantt Chart: Resource Usage in the Project: Resources: Project Network Diagram: Reports:
UML Diagrams
UML, which stands for Unified Modeling Language, is a way to visually represent the architecture, design, and implementation of complex software systems. When you’re writing code, there are thousands of lines in an application, and it’s difficult to keep track of the relationships and hierarchies within a software system. UML diagrams divide that software system…
Picture with correct answers
Software Development Life Cycle
The SDLC is a process used by software development teams to design, develop, test, and deploy high-quality software. It is a structured framework that helps guide the development process from initiation to completion. Phases of SDLC include:
- Analysis – the first stage in any development, essential for progressing to the next phases.
- Design/Planning – the future software must comply with IEEE standards.
- Implementation – creating the software + verification * validation – checking the accuracy against the initial requirements.
- Maintenance – ongoing support and updates after delivering the software to the client.
Common life cycle models include:
- Waterfall Model:
- Linear and sequential approach.
- Progresses through phases like Conception, Initiation, Analysis, Design, Construction, Testing, Maintenance.
- Each phase must be completed before the next one begins.
- V-Model (Verification and Validation):
- Similar to the waterfall model but emphasizes testing.
- Each development stage has a corresponding testing phase.
- Testing is integrated throughout the development process.
- Incremental Model:
- Breaks down the system into smaller parts.
- Each part is developed and tested independently.
- New functionality is added in increments.
- Iterative Model:
- Similar to the incremental model but with more flexibility.
- Allows for revisiting and making changes to previous stages.
- Continues through iterations until the system meets the requirements.
- Spiral Model:
- Combines the idea of iteration with the systematic aspects of the waterfall model.
- Progresses through multiple cycles called spirals, each representing a phase of the software process.
- Includes risk analysis and is well-suited for large, complex projects.
- Agile Model:
- Emphasizes flexibility and customer satisfaction.
- Works in short iterations called sprints.
- Frequent communication with customers and adaptation to changing requirements.
- RAD Model (Rapid Application Development):
- Focuses on quick development and iteration.
- Involves user feedback and changes during development.
- Suitable for projects with well-defined requirements and short timelines.
- Prototyping Model:
- Involves creating prototypes (approximations) of the final system.
- Provides a tangible representation for users to provide feedback.
- Helps in refining and improving the system.