Fundamentals of Information Systems, Service Management, and Software Engineering

1. Information Basics

The national information‑technology framework consists of six elements: IT applications, information resources, networks, IT industry, talent, and policies/standards.

Key emerging concepts include:

N‑network convergence (telecom, Internet, TV, IoT, smart grid)

Cloud computing – dynamic, scalable virtualized resources delivered over the Internet

Internet of Things – devices connected via wireless, RFID, GPS, etc., enabling intelligent identification, tracking, and management

IPv6 – next‑generation IP protocol providing multiple addresses per user

Electronic government (e‑government) is categorized as G2G, G2B, G2C, and G2E.

ERP characteristics: integrated, business‑process oriented, modular, and open; functions include finance, production control, logistics, and HR.

CRM focuses on customer‑centered relationship management, emphasizing target identification, acquisition cost, and loyalty.

2. Information System Service Management

Common problems in information‑technology projects:

Insufficient system quality, schedule delays, budget overruns, documentation gaps, changing requirements, communication issues, security vulnerabilities, and imbalance between hardware and software.

Root causes include lack of capable vendors, poor contractor selection, weak integration firms, and missing governance mechanisms.

Management structures cover qualification of integration units, project managers, and supervision entities.

Project manager levels: project manager, senior project manager, and expert project manager, with certification separated from approval.

Qualification management ensures appropriate staffing and capability levels across four grades.

IT Service Management (ITSM) objectives: customer‑centric, high‑quality, low‑cost, and accurately priced services.

Information system audit defines, evaluates, and provides feedback on system availability, confidentiality, and integrity.

3. System Integration Technical Focus

System integration merges software, hardware, and networking to meet user requirements, encompassing planning, design, development, implementation, service, and support.

Key lifecycle phases: initiation, development, planning, analysis, design, implementation, acceptance, operation, and retirement.

Development methods include structured, prototyping, object‑oriented, and various software models (waterfall, prototype, spiral, V‑model, iterative).

Software testing covers dynamic (black‑box, white‑box, gray‑box) and static (desk‑check, code review, walkthrough) techniques, with unit, integration, validation, and system test stages.

Maintenance types: corrective, adaptive, perfective, and preventive.

Software quality processes involve assurance, verification, validation, review, and audit activities.

UML provides a standardized visual modeling language for structure, behavior, and model management.

Common architectural patterns and their pros/cons are described (pipeline/filter, object‑oriented, event‑driven, layered, client/server).

Middleware categories include database access (ODBC/JDBC), RPC, message‑oriented (MQSeries), distributed objects (CORBA, RMI/EJB, DCOM), and transaction monitors.

Data warehouses are subject‑oriented, integrated, stable, and historical data stores supporting decision making.

Web services technologies (SOAP, WSDL, UDDI, XML) are suitable for cross‑firewall integration, B2B, and reuse, but not for simple LAN applications.

Network management spans device, server, resource, and user management, following OSI standards for configuration, performance, fault, security, and billing management.