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The Information System . June 23, 2012. Information System. Capture and management of data to produce useful information that supports an organization and its employees, customers, suppliers and partners. Classification. Classification. System Stakeholders.
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The Information System June 23, 2012
Information System • Capture and management of data to produce useful information that supports an organization and its employees, customers, suppliers and partners
System Development Process • Set of activities, methods, best practices, deliverables and automated tools that stakeholders use to develop and continuously improve information systems and software
Capability Maturity Model • A standardized framework for assessing the maturity level of an organization’s information systems development and management processes and products. It consist of five levels of maturity
System Development Methodology • A formalized approach to systems development process; a standardized process that includes the activities, methods, best practices, deliverables and automated tools to be sued for information systems development
Systems Development Methodologies • Executes the systems development stage of a systems life cycle. Each individual information systems has its own life cycle. The methodology is the standard process to build and maintain that systems and all other information system through their life cycle
Systems Methodologies • Architected Rapid Application Development • Dynamic Systems Development Methodology • Joint Application Development • Rapid Application Development • Rational Unified Process • Structures analysis and Design • eXtremePorgramming
System Life Cycle • The factoring of the lifetime of an information sytem into two stages: (1) systems development (2) systems operations and maintenance – first you built it, the you use it and maintain it
Principles systems development • Get the system users involved • Use a problem solving approach • Established phases and activities • Document throughout development • Establish standards • Manage the process and projects • Justify information system capital investment • Don’t be afraid to cancel • Divide and Conquer • Design system for growth and change
Where do systems development projects come from? • Problems – an undesirable situations that prevents the organization from fully achieving its mission, vision and goals or objectives • Opportunity – a chance to improve the organization even in the absence of an identified problem • Directive - an new requirement that is imposed by management, government or some external influence
Framework for Problem Identification • P - the need to correct or improve performance • I - the need to correct or improve information • E - the need to correct or improve economics (controlled cost or increase profit) • C - the need to correct or improve control or security • E - the need to correct or improve efficiency of people or process • S - the need to correct or improve service to customers, suppliers, partners, employees, etc.
