SYSTEM ANALYSIS AND DESIGN SYSTEM ANALYSIS AND DESIGN

SYSTEM ANALYSIS AND DESIGN

SYSTEM ANALYSIS AND DESIGN METHODS 6 TH EDITION By Jeffery L. Whitten, Lonnie D Bentley, Kevin C. Dittman

A framework of system analysis and design � � � 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

� 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 Players-system stakeholders 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

Business Drivers for today’s information system � Globalization of economy � Electronic commerce � Security Privacy � Collaboration and partnership � KM � TQM � BPR

Electronic commerce and business � � � � These are general e-commerce types: Business to Business (or B 2 B) e-commerce (sometimes called e-procurement) Business to Consumer (or B 2 C) e-commerce Consumer-to-consumer (or C 2 C) e-commerce Non-Business EC: NGOs, universities , schools etc. activities to improve their operations and reduce costs. Business-to-government (or B 2 G) 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.

� 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.

Technology Drivers for today’s Information System � Internet & networks � Mobile & Wireless technologies � Object Oriented technologies ◦ Agile development � Collaborative technologies � Enterprise applications ◦ ◦ ERP SCM CRM EPI

System Development Process � Identify � System the problem Analysis Design Implementation Support