SYSTEM ANALYSIS AND DESIGN

SYSTEM ANALYSIS AND DESIGN METHODS 6TH EDITION

By Jeffery L. Whitten, Lonnie D Bentley, Kevin C. Dittman

IS: An Information System can be any organized combination of people, hardware, software and data for an organization .

MIS: Management Information System is that stores, retrieves, transforms and disseminates information in an organization.

Transaction Processing Systems◦ Batch – transaction data accumulate over time, processed periodically.◦ Real-time – data processed immediately after a transaction occurs

IT: Information Technology refers to various hardware, software, networking and data management components necessary to operate

A framework of system analysis and design

Decision Support System:◦ Provide information and techniques to analyze specific

problems Executive Information Systems

◦ critical information tailored to the information needs of executives

Expert System Office automation system

The team consist of:- Information workers System owner-Manager System user

◦ Internal◦ External

System Designer System Builder System Analyst External service provider The project manager

The Players-system stakeholders

Globalization of economy Electronic commerce Security Privacy Collaboration and partnership KM TQM BPR

Business Drivers for today’s information system

These are general e-commerce types: Business to Business (or B2B) e-commerce (sometimes

called e-procurement) Business to Consumer (or B2C) e-commerce Consumer-to-consumer (or C2C) e-commerce Non-Business EC: NGOs, universities , schools etc.

activities to improve their operations and reduce costs. Business-to-government (or B2G) e-commerce Intra-business EC: E-commerce category that includes all

internal organizational activities that involve the exchange of goods, services, or information among various units and individuals in an organization.

Electronic commerce and business

System analysts must be capable of:◦ Fully understanding the User’s organizational

system mission, objectives, and most probable applications.

◦ Analytically organizing, extracting, and decomposing the OPERATING ENVIRONMENT

◦ relative to the mission into manageable problem space(s) and solution space(s).

◦ Effectively developing a system solution that ensures mission success within the constraintsof cost, schedule, technology, support, and risk factors.

Internet & networks Mobile & Wireless technologies Object Oriented technologies

◦ Agile development Collaborative technologies Enterprise applications

◦ ERP◦ SCM◦ CRM◦ EPI

Technology Drivers for today’s Information System

Identify the problem System Analysis System Design System Implementation System Support

System Development Process