Software Engineering

Software Engineering is the discipline of designing, implementing, testing, and maintaining software applications in a systematic, disciplined, and quantifiable approach. It involves applying engineering principles to software development to create reliable and efficient software systems.

Key focus areas include:

• Requirements gathering and analysis
• Software design and architecture
• Implementation and coding standards
• Testing and quality assurance
• Maintenance and evolution

The purpose of this user guide is to help the potential retail business streamline its retail process.

Software design is critical for building scalable and maintainable systems. Common architectural patterns include:

• Layered Architecture (Presentation, Business Logic, Data)
• Client-Server Model
• Microservices
• Event-Driven Architecture
• Model-View-Controller (MVC)

Choosing the right design pattern depends on project requirements, team expertise, and system scalability needs.

Below is Software Development Life Cycle (SDLC) example in JavaScript , each representing a phase of the cycle

function requirementAnalysis() {
    console.log("Step 1: Gathering Requirements");
}

function systemDesign(requirements) {
    console.log("Step 2: Designing the System");
}

function implementation(components) {
    console.log("Step 3: Developing the System");
}

function testing(components) {
    console.log("Step 4: Testing the System");
    for (let comp of components) {
        const testPassed = Math.random() > 0.2; // simulate pass/fail
        if (testPassed) {
            console.log(`${comp} passed testing`);
        } else {
            console.log(`${comp} failed testing - fixing issues`);
        }
    }
}

function deployment() {
    console.log("Step 5: Deploying the Application");
    console.log("Application successfully deployed.");
}

function maintenance() {
    console.log("Step 6: Maintaining the Application");
    let usage = 0;
    while (usage < 3) { // simulate some maintenance cycles
        if (issue) {
            console.log("Issue detected - applying fix.");
        } else {
            console.log("System running smoothly.");
        }
        usage++;
    }
}