Unit 2: Operating Web-Based Applications
Chapter 1: Web Applications and Online Services
1. Introduction to Web-Based Applications
A web-based application is an application software program that runs on a remote web server and is accessed over the internet through a standard web browser (such as Google Chrome, Mozilla Firefox, or Microsoft Edge).
Web Applications vs. Desktop Applications
| Feature | Web Application | Desktop Application |
|---|---|---|
| Installation | No local installation needed; runs in browser | Must be installed on local hard drive |
| Platform Independence | Works on any OS (Windows, macOS, Linux, Android) | Often compiled for a specific OS |
| Updates & Upgrades | Instantly updated on server for all users | Requires manual user updates or patches |
| Storage & Sync | Data stored in centralized cloud databases | Data stored locally on device |
| Connectivity | Requires internet or network access | Operates offline |
| Examples | Gmail, Google Docs, IRCTC, Canva | MS Word (offline), Notepad, VLC Player |
2. Common Categories of Web-Based Services
1. E-Governance (Electronic Governance)
- Delivering government services, information, and citizen welfare schemes digitally.
- Key Portals:
digitalindia.gov.in(Digital India initiative)parivahan.gov.in(Driving licenses and vehicle registration)incometax.gov.in(E-filing tax returns)uidai.gov.in(Aadhaar identity services)digilocker.gov.in(Secure cloud repository for official documents)- Benefits: Transparency, reduced corruption, time-saving, 24x7 accessibility.
2. E-Commerce (Electronic Commerce)
- Buying and selling of goods or services, and transferring funds over an electronic network.
- Models:
- B2C (Business-to-Consumer): Amazon, Flipkart, Blinkit.
- B2B (Business-to-Business): IndiaMART, Alibaba.
- C2C (Consumer-to-Consumer): OLX, eBay.
- C2B (Consumer-to-Business): Freelancers offering services to companies.
3. E-Learning (Electronic Learning)
- Education delivered via digital platforms, interactive multimedia, video lectures, and online assessments.
- Key Portals:
swayam.gov.in(Government of India MOOC portal)diksha.gov.in(National digital platform for school teachers and students)- Khan Academy, Coursera, edX.
- Benefits: Self-paced learning, global access to top educators, affordability, rich multimedia.
4. E-Reservation and Ticketing
- Online booking of travel tickets, hotels, and events.
- Key Portals:
irctc.co.in(Indian Railways), MakeMyTrip, BookMyShow. - Features: Real-time seat availability, PNR status tracking, online cancellations and refunds.
5. Online Banking and Digital Payments
- Managing bank accounts, money transfers, and financial services online.
- Technologies:
- NEFT / RTGS / IMPS: Bank-to-bank electronic fund transfers.
- UPI (Unified Payments Interface): Instant mobile payment system created by NPCI (BHIM, PhonePe, Google Pay).
- E-Wallets: Digital wallets storing preloaded currency (Paytm, Amazon Pay).
3. Social Networking and Collaboration Platforms
- Communication & Professional Networking: LinkedIn, Twitter/X, Microsoft Teams, Slack.
- Cloud Collaboration: Google Workspace (Docs, Sheets, Drive), Microsoft 365.
- Netiquette (Digital Etiquette):
- Respect others' privacy and intellectual property.
- Avoid cyberbullying, offensive language, and spreading unverified rumors/fake news.
- Do not spam or share sensitive personal credentials.
4. CBSE Board Exam Focus Questions
- Explain any three benefits of E-Governance for citizens.
- Differentiate between B2B and B2C e-commerce models with real-world examples.
- What is DigiLocker? Mention two advantages of using DigiLocker.
- Define Netiquette. State two essential netiquette guidelines when communicating online.