Unit 6 Session 4: Web Pages, E-Commerce, Smart City, Intranet and Extranet | IT 231 BBA Slides

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Unit 6 · Session 4

Web Pages, E-Commerce, Smart City, Intranet and Extranet

IT 231: IT and Applications (BBA)

Today's focus

  1. Static vs Dynamic Web Pages
  2. Smart City
  3. Intranet & Extranet

🎯 Learning Objectives

By the end of this session, you will be able to:

  • ✅ Differentiate between static and dynamic web pages.
  • ✅ Define a smart city and the core technologies that enable it.
  • ✅ Give examples of smart city applications in action.
  • ✅ Explain intranets and extranets and how they differ from the public Internet.

Static vs Dynamic Web Pages

Static Web Pages

A web page delivered to the user exactly as it is stored on the server.

  • Technology: Plain HTML and CSS.
  • Speed: Loads instantly with no processing required.
  • Limitations: Content is fixed and must be manually updated by editing HTML files.

Dynamic Web Pages

A web page whose content is generated "on the fly" by the server.

  • Technology: Server scripts (PHP, Node.js) and Databases (MySQL).
  • Personalization: Can show different content to different users (e.g., social media feeds).
  • Management: Can be updated via a CMS (like WordPress) without touching code.

Key Differences

Feature Static Dynamic
Content Fixed Changes based on user/time
Database None Heavily used
Complexity Low High

Smart City

What is a Smart City? 🏙️

An urban area that uses IoT sensors to collect data and uses insights to manage assets, resources, and services efficiently.

  • Aims to improve quality of life and sustainability.
  • Relies on data analytics and connectivity.

Core Technologies 🔌

  • Internet of Things (IoT): Sensors embedded in infrastructure.
  • Big Data Analytics: Processing massive streams of urban data.
  • Artificial Intelligence: Automating city responses based on real-time data.
  • Cloud Computing: Storing and processing the data securely.

Smart Applications in Action

Traffic

Sensors adjusting traffic lights in real-time to reduce jams.

Waste

Garbage bins alerting collectors only when full.

Energy

Smart grids balancing power loads efficiently.

Safety

Connected streetlights turning on when pedestrians approach.

Intranet & Extranet

What is an Intranet? 🏢

A private network contained within an enterprise used to securely share company information and resources among employees.

  • Functions like the Internet but is closed off to the public.
  • Uses firewalls for security.
  • Uses: Employee directories, internal memos, HR portals.

What is an Extranet? 🤝

An intranet that can be partially accessed by authorized outside users.

  • Securely shares business info with partners, vendors, or suppliers.
  • Requires authentication (VPNs, secure logins).
  • Uses: Supply chain management, client portals.

Comparing the Networks

Feature Internet Intranet Extranet
Access Public Internal Employees Trusted Partners
Security Level Low High High

Exam Practice 📝

Short answer

  1. Differentiate between static and dynamic web pages with examples.
  2. How does an extranet reduce transaction costs in modern supply chain management?
  3. Distinguish between B2B and B2C e-commerce with specific examples.
  4. Explain client-side and server-side scripting.

Revise the answers in the full notes linked on the last slide.

Thank You

Questions before we wrap this hour?

Next: Unit 7 · Session 1 — Multimedia Systems and Elements

Course Home · Next session

📖 Read the full notes: Static and Dynamic Web Pages · Intranet, Extranet, Censorship, and Privacy Issues · E-Commerce, E-Governance, and Smart Cities