CSS CS Optional — Paper-I, Section-B, Topic V.

🔑 What It Covers

• Translating design (structure charts, class diagrams, pseudocode) → actual running code.

📌 Code Reuse

• Libraries, frameworks, pre-built components, code generators.
• Reduces both effort AND defect rate vs. writing from scratch.
• Connects directly to RAD's "application generation" phase.

📌 Structured Programming Discipline

• Single entry/exit points.
• No uncontrolled jumps (no goto-style logic).
• Sequence / selection / iteration constructs preferred.
• = implementation-level counterpart of "modularity" in design.

📌 Implementation Feeds Back Into Design

• Chosen language/platform/component can reshape planned architecture.
• e.g. a chosen DB engine can rule out a planned data-tier design.

📌 Coding Standards

• Naming conventions, comments, style guides.
• Supports maintainability; checked by SQA reviews.

⚠️ MCQ Trap

• "Presentation / logic / data" tiers = architectural design, NOT implementation.