Info Systems in Business: Types, Roles & Impact

Core Concepts: What is an Information System?

An Information System (IS) is a combination of hardware, software, data, people, and processes that collects, stores, processes, and distributes information to support decision-making and business operations.

Key Components of an IS

mindmap
  root((Information System))
    Hardware
      Computers
      Servers
      Networks
    Software
      Operating Systems
      Applications (e.g., ERP, CRM)
    Data
      Databases
      Files
    People
      Users
      IT Staff
    Processes
      Workflows
      Procedures

Why does this matter?

• Hardware (e.g., servers at NTC) enables physical processing.
• Software (e.g., eSewa’s payment app) automates tasks.
• Data (e.g., customer records in Nabil Bank) fuels decisions.
• People (e.g., Daraz’s customer support) interpret outputs.
• Processes (e.g., Pathao’s ride-matching algorithm) define workflows.

Types of Information Systems

Businesses use four primary IS types, each serving a unique purpose:

How Information Systems Work: A Real-World Trace

Case Study: eSewa’s Payment System (TPS + DSS)

1. Transaction Processing (TPS)

   • When you pay a bill via eSewa:
     • Your phone (hardware) sends a request to eSewa’s server (software).
     • The system checks your balance (data) and deducts the amount (process).
     • A confirmation SMS is sent (output).

2. Decision Support (DSS)

   • eSewa’s fraud detection system uses AI to flag unusual transactions (e.g., sudden large payments).
   • Example: If a user in Kathmandu suddenly transfers ₹50,000 to India, the system pauses and alerts for verification.

sequenceDiagram
    participant User
    participant eSewa_Server
    participant Bank_Database
    participant Fraud_Detection

    User->>eSewa_Server: Request Payment (₹50,000)
    eSewa_Server->>Bank_Database: Check Balance
    Bank_Database-->>eSewa_Server: Balance: ₹60,000
    eSewa_Server->>Fraud_Detection: Flag Transaction
    Fraud_Detection-->>eSewa_Server: "High Risk: Unusual Amount"
    eSewa_Server->>User: "Verify OTP for Security"

Why this matters for exams:

• TPS handles routine tasks (e.g., payments).
• DSS adds intelligence (e.g., fraud detection).
• Both rely on data integration (bank records + user history).

Information Systems and Business Strategy

IS doesn’t just support operations—it drives competitive advantage. How?

Porter’s Five Forces + IS

In the Real World

1. eSewa (Nepal)

   • Idea Used: TPS + DSS
   • How? Processes ₹100+ billion/month in transactions (TPS) while its AI fraud detection (DSS) blocks ₹500M/year in scams.

2. Nabil Bank (Nepal)

   • Idea Used: MIS for Loan Approvals
   • How? Uses credit scoring models (IS) to approve 80% of loans in <24 hours, reducing human bias.

3. Daraz (Alibaba Group)

   • Idea Used: SCM + DSS
   • How? Its supply chain IS predicts stockouts (DSS) and automates warehouse picking (TPS), cutting delivery time by 40%.

Advantages and Challenges of Information Systems

Advantages

✅ Efficiency: Automates repetitive tasks (e.g., NTC’s billing system). ✅ Accuracy: Reduces human error (e.g., NEPSE’s trade matching). ✅ Decision Support: Provides real-time insights (e.g., Daraz’s sales dashboards). ✅ Competitive Edge: Enables innovation (e.g., Khalti’s digital wallet).

Challenges

❌ High Costs: Implementing ERP (e.g., SAP) can cost ₹50M+ for large firms. ❌ Data Security: Cyberattacks (e.g., 2022 Nepal Police hack) risk sensitive data. ❌ User Resistance: Employees may reject new systems (e.g., NTC staff slow to adopt digital records). ❌ Integration Issues: Legacy systems (e.g., old bank mainframes) may not connect with modern IS.

Exam Tip: How This Unit is Tested

1. Definitions (5-10 marks)

   • Expect questions like: "Define TPS and give a Nepali example." Answer: "TPS (Transaction Processing System) records routine transactions. Example: eSewa processes bill payments in real-time."

2. Case Analysis (15-20 marks)

   • Scenario: "Nabil Bank wants to reduce loan approval time. Which IS type should it use and why?"
   • Answer:
     • MIS (Management Information System) for tactical reports (e.g., customer credit history).
     • DSS (Decision Support System) for AI-driven risk assessment.
     • ESS (Executive Support System) for strategic loan portfolio decisions.

3. Diagrams (10 marks)

   • Draw and label:
     • Components of an IS (hardware/software/data/people/processes).
     • Porter’s Five Forces with IS examples (as shown above).

4. Real-World Application (10 marks)

   • Question: "How does Daraz use IS to manage its supply chain?"
   • Answer:
     • TPS: Automates order processing.
     • DSS: Predicts demand using sales data.
     • SCM (Supply Chain Management): Tracks shipments in real-time.

Worked Example: NTC’s Network Optimization (ESS + DSS)

Problem: NTC wants to reduce network congestion in Kathmandu.

Solution:

1. ESS (Executive Support System)
   • Provides high-level reports on congestion hotspots (e.g., Thapathali vs. Boudha).
2. DSS (Decision Support System)
   • Uses AI to simulate adding towers in high-traffic areas.
3. Outcome:
   • 20% faster speeds in congested zones after deploying 5 new towers (guided by IS data).

flowchart TD
    A["ESS: High-Level Reports"] --> B["Identify Congestion Zones"]
    B --> C["DSS: AI Simulation"]
    C --> D["Recommend Tower Placement"]
    D --> E["NTC Deploys Towers"]
    E --> F["20% Faster Speeds"]

Key Takeaways for Exam Success

• Memorize the 4 IS types (TPS, MIS, DSS, ESS) and one Nepali example each.
• Link IS to business strategy using Porter’s Five Forces.
• Practice drawing diagrams (components of IS, data flow in eSewa).
• Relate theories to real cases (e.g., Nabil Bank’s MIS for loans, Daraz’s DSS for demand forecasting).
• Understand challenges (cost, security, resistance) with Nepali examples.

Final Visual Summary:

classDiagram
    class InformationSystem {
        +Hardware
        +Software
        +Data
        +People
        +Processes
    }
    class TPS {
        <<Type>>
        Routine Transactions
    }
    class MIS {
        <<Type>>
        Tactical Reports
    }
    class DSS {
        <<Type>>
        Non-Routine Decisions
    }
    class ESS {
        <<Type>>
        Strategic Insights
    }
    InformationSystem "1" *-- "4" ISType
    ISType <|-- TPS
    ISType <|-- MIS
    ISType <|-- DSS
    ISType <|-- ESS