Fundamentals of Software Testing and Quality Assurance
What is Software Testing?
Software Testing is the process of checking a software application to find errors (bugs) and ensure that it works correctly according to the requirements.
Simple Definition
Software testing means verifying and validating that a program does what it is supposed to do and is free from defects.
Key Points
- Helps find mistakes or bugs
- Ensures quality and reliability
- Checks if software meets user requirements
- Improves performance and security
Example
If you create a login page, software
Read MoreSoftware Development Models: Waterfall, Iterative, and Spiral
1. Classic Waterfall Model
The Classic Waterfall Model is a sequential software development model where the process flows step-by-step. Each phase must be completed before moving to the next, with no backward movement.
Phases of the Waterfall Model
- Requirement Analysis: Collect and analyze all system requirements.
- System Design: Plan the architecture, database, and system design.
- Implementation (Coding): Developers write the program code.
- Testing: The system is tested to identify and fix errors.
- Deployment:
Software Design Principles and Architectural Patterns
Module Design
What is good vs. bad design?
Good design is characterized by high cohesion and low coupling, meaning each module has a clear, focused responsibility and minimal dependency on other modules. This leads to systems that are easier to understand, test, reuse, and maintain. Good design also emphasizes clarity, simplicity, and well-defined interfaces.
Bad design has low cohesion and high coupling, where modules perform unrelated tasks and depend heavily on each other. This results in systems
Read MoreUsability Inspection, Data Gathering, and Analysis Methods
————— LECTURE 4: —————— INSPECTION:
Experts evaluate interface without involving users. Goal: Identify usability problems early in design.
Advantages: Cheap, fast, early design feedback. Disadvantages: Depends on expert judgment, may miss real user issues.
———– TYPES OF INSPECTION METHODS:
1.) Heuristic Evaluation, 2.) Cognitive Walkthrough, 3.) Pluralistic Walkthrough, 4.) Guidelines Review, 5.) Consistency Inspection.
———– HEURISTIC EVALUATION:
Developed by Jakob
Read MoreSoftware Engineering and Requirements Analysis Q&A
Software Engineering Practice Questions
1Q: Which of the following statements about domain requirements is FALSE?
A: Domain requirements typically specify how a system must implement a feature.
2Q: In which scenario would the V-Model be the best choice for software development?
A: When the project requires early testing and strict validation.
3Q: Which of the following is the biggest challenge in requirements elicitation for large-scale systems?
A: Ensuring that all stakeholders provide input without
Interaction Design Principles: Creating Intuitive User Experiences
What is Interaction Design (IxD)?
Interaction Design (IxD) is the practice of designing interactive products to support how people communicate and interact in their everyday and working lives.
- Winograd: “Designing spaces for human communication and interaction.”
- Thackara: Focuses on the why and how of daily interactions.
- Saffer: “Art of facilitating interactions between humans through products and services.”
Key idea: It is about creating meaningful user experiences, not just functional systems.
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