Software Engineering Fundamentals: Estimation, Design, Risk, and Quality Assurance
Software Project Estimation and Decomposition
Decomposition Techniques in Estimation
Software project estimation is similar to problem solving. When the problem to be solved is too complex in software engineering, we decompose the given problem into a set of smaller problems.
The decomposition can be done using two approaches:
- Decomposition of the problem (e.g., breaking down features).
- Decomposition of the process (e.g., breaking down tasks).
Estimation uses one or both forms of decomposition (partitioning)
Read MoreEssential Concepts in Software Development and Management
What is a Product Backlog?
The product backlog is a prioritized list of tasks, features, and requirements that need to be completed for a project, typically in Agile development. It is managed by the product owner and evolves over time as new requirements emerge.
Two Key Characteristics of Software
- Intangibility: Unlike physical products, software cannot be touched or seen physically.
- Maintainability: Software can be modified and updated to fix defects or enhance functionality.
Common Software Development
Read MoreSystem Development Methodology Selection Criteria
Six Criteria for Selecting a System Development Methodology
Clarity of User Requirements
When user requirements for what the system should do are unclear, it is difficult to understand them by talking about them and explaining them with written reports. Users normally need to interact with technology to truly understand what the new system can do and how to best apply it to their needs. Prototyping and throwaway prototyping-based RAD methodologies are usually more appropriate when user requirements
Read MoreSoftware Quality Fundamentals: SDLC, Testing Types, QA/QC Insights
Verification vs. Validation in Software Quality
Understanding the distinction between verification and validation is crucial for effective software quality assurance. Here’s a breakdown of their key differences:
- Verification: Checks whether the product is built right.
- Validation: Checks whether the right product is built.
- Verification: Ensures the software meets specifications.
- Validation: Ensures the software meets user needs.
- Verification: A static process (no code execution).
- Validation: A dynamic process
Software Design Principles & Cost Estimation Methods
Coupling and Cohesion in Software Engineering
Coupling and Cohesion are fundamental concepts in software engineering that describe the relationships between modules in a system.
Coupling
Coupling refers to the degree of interdependence between modules. The lower the coupling, the better the design, as tightly coupled modules are more difficult to maintain and modify.
Types of Coupling
- Tightly Coupled: Modules rely heavily on each other, making changes difficult.
- Loosely Coupled: Modules are independent
Software Project Management Essentials: Agile & Planning
What is Software Project Management (SPM)?
Software Project Management (SPM) is the discipline of planning, organizing, and managing software projects, focusing on scope, time, cost, and quality.
Software Project Planning Steps
- Define scope and objectives
- Identify tasks (Work Breakdown Structure – WBS)
- Estimate resources and time
- Schedule tasks
- Assign responsibilities
- Plan risk management
- Monitor and control progress
- Finalize and review
Plan-Based Project Management: Pros and Cons
Pros:
- Predictable timelines