Chapter 1.4

• Alternative Model - planning, analysis, and design interact continuously, followed by implementation and operation and support
• Alternative model - interactive model reflecting real-world practice and ongoing dialogue among users, managers, and systems developers
• Systems Planning - identifies the nature and scope of the business opportunity or problem
• Systems Planning - begins with a systems request describing problems or desired changes
• Systems Planning - involves a preliminary investigation determining feasibility based on operational, technical, economic, and time factors, which influences the entire development process
• Systems Analysis - aims to construct a logical model of the new system
• Systems Analysis - answers questions regarding system users, functions, and usage
• Systems Analysis - involves investigating current systems, identifying improvements, and conceptualizing the new system
• System Analysis - begins with requirements modeling and produces the System Requirements Documents
• Systems Design - determines system operation, including hardware, software, network infrastructure, user interface, forms, reports, programs, databases, and files
• Systems Design - aims to create a blueprint meeting documented requirements
• Systems Design - identifies outputs, inputs, and processes, involving manager and user participation to prevent misunderstandings
• Systems Implementation - construct new system
• Systems Implementation - write, test, and document programs, and perform system evaluation to ensure proper operation and alignment with expected costs and benefits
• Systems Operation, Support, and Security - a well-designed system will be secure, reliable, maintainable, and scalable so it can expand to meet new business requirements and volumes