Published on March 8, 2014
Presented by: Dr. Akhlas Ahmed Preston University Lecture # 08
Use the systems development process outlined and the model of IS components as problem-solving frameworks to help you propose information systems solutions to simple business problems. Describe and give examples to illustrate how you might use each of the steps of the information system development cycle to develop and implement an e-business system.
Explain how prototyping improves the process of systems development for end users and IS specialists. Identify the activities involved in the implementation of new information systems. Describe several evaluation factors that should be considered in evaluating the acquisition of hardware, software, and IS services. Identify several change management solutions for end user resistance to the implementation of new e-business applications.
Monitor and Evaluate Results Define the Problem Develop Alternative Solutions Select the Solution Design the Solution Implement the Solution
Understand the Business Problem or Opportunity Develop an Information System Solution Systems Investigation Product: Feasibility Study Systems Analysis Product: Functional Requirements Systems Design Product: System Specifications Implement the Information System Solution Systems Implementation Product: Operational System Systems Maintenance Product: Improved System
Identify an End User's Information Requirements Develop Information System Prototypes Prototyping Cycle Revise the Prototypes to Better Meet End User Requirements Maintenance Cycle Use and Maintain the Accepted System
Economic Feasibility Can we afford it? Technical Feasibility Does the capability exist? Organizational Feasibility Is it a good fit? Operational Feasibility Will it be accepted?
Organizational Key Areas of Systems Analysis Present System Functional Requirements
User Interface Design Screen, Form, Report and Dialog Design Data Design Data Element Structure Design Process Design Program and Procedure Design
Controls What controls are needed? Input What data is required? Processing What operations on the input is required? Storage Will the application need to store data? Output What information is needed?
Implementation Activities Acquisition Development and Modification System Documentation System Testing Conversion End User Training
Hardware Evaluation Factors • Performance • Cost • Reliability • Compatibility • Technology • Ergonomics • Connectivity • Scalability • Software • Support Software Evaluation Factors • Quality • Efficiency • Flexibility • Security • Connectivity • Language • Documentation • Hardware • Efficiency
IS Evaluation Factors • Performance • Systems Development • Maintenance • Conversion • Training • Backup • Accessibility • Business Position • Hardware • Software
Implementation Activities • • • • • • Acquisition Software Development Training Testing Documentation Conversion
Old System Parallel New System Old System Old System Old System New System New System New System Pilot Phased Plunge
Change Management Organizational Design Organization Mission and Role Measurement and Rewards Core Competencies Development
• Business professionals and IS specialists use a systems approach to help them develop information system solutions to meet e-business needs. • Prototyping is a major alternative methodology to the traditional information system development cycle. It includes the use of prototyping tools and methodologies, which promote an iterative, interactive process.
• The application development capabilities built into many end user software packages have made it easier for end users to develop their own e-business applications. • The implementation process for IS projects involves acquisition, testing, documentation, training, installation, and conversion. • Business professionals should know how to evaluate IT products for acquisition. IT vendor proposals should be based on specifications developed during the design phase.
• Implementation activities include managing the introduction and implementation of changes in the business processes, organizational structures, job assignments, and work relationships resulting from e-business initiatives.
Management Information System ... 1. Presented by: Dr. Akhlas Ahmed Preston University Lecture # 08
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