1. Sixth Edition 1 M a n a g e m e n t I n f o r m a t i o n S y s t e m s M a n a g I n g I n f o r m a t i o n T e c h n o l o g y i n t h e E – B u s i n e s s E n t e r p r i s e Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. C h a p t e r James A. O’Brien 10 Developing E-Business Solutions

2. Sixth Edition James A. O’Brien 2 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Systems Approach to Problem Solving Design the Solution Design the Solution Define the Problem Define the Problem Develop Alternative Solutions Develop Alternative Solutions Select the Solution Select the Solution Implement the Solution Implement the Solution Monitor and Evaluate Results

3. Sixth Edition James A. O’Brien 3 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Traditional Systems Development Life Cycle Implementation Product: Operational System Implementation Product: Operational System Systems Investigation Product: Feasibility Study Systems Investigation Product: Feasibility Study Systems Analysis Product: Functional Requirements Systems Analysis Product: Functional Requirements Systems Design Product: System Specifications Systems Design Product: System Specifications Systems Maintenance Product: Improved System Systems Maintenance Product: Improved System Understand the Business Problem or Opportunity Develop an Information System Solution Implement the Information System Solution

4. Sixth Edition James A. O’Brien 4 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Prototyping Process Use and Maintain the Accepted System Use and Maintain the Accepted System Identify an End User's Information Requirements Identify an End User's Information Requirements Develop Information System Prototypes Develop Information System Prototypes Revise the Prototypes to Better Meet End User Requirements Revise the Prototypes to Better Meet End User Requirements Prototyping Cycle Maintenance Cycle

5. Sixth Edition James A. O’Brien 5 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Systems Investigation Organizational Feasibility Is it a good fit? Operational Feasibility Will it be accepted? Economic Feasibility Can we afford it? Technical Feasibility Does the capability exist?

6. Sixth Edition James A. O’Brien 6 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Systems Analysis Key Areas of Systems Analysis Organizational Functional Requirements Functional Requirements Present System Present System

7. Sixth Edition James A. O’Brien 7 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Systems Design Data Design Data Design User Interface Design User Interface Design Process Design Process Design Screen, Form, Report and Dialog Design Data Element Structure Design Program and Procedure Design

8. Sixth Edition James A. O’Brien 8 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. The Implementation Process Conversion System Docu- mentation System Docu- mentation End User Training End User Training Development and Modification Development and Modification Acquisition Implementation Activities Implementation Activities System Testing System Testing

9. Sixth Edition James A. O’Brien 9 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. The Systems Maintenance Systems Maintenance Systems Maintenance + Begins as the system becomes operational / accepted + Involves modification of the system as requirements change + Well designed systems should be easily changed + Continues until the system is retired.

10. Sixth Edition James A. O’Brien 10 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Computer-Aided Systems Engineering Planning Toolset Analysis Toolset Design Toolset Information Integrator Code Generation Toolset Database Generation Toolset System Interface Server Repository Workstation Repositories CASE

11. Sixth Edition James A. O’Brien 11 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Installation Conversion Methods Old System New System Old System New System Old System New System Parallel Pilot Phased Plunge

12. Sixth Edition James A. O’Brien 12 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. End User Development Controls What controls are needed? Controls What controls are needed? Input What data is required? Input What data is required? Processing What operations on the input is required? Processing What operations on the input is required? Output What information is needed? Output What information is needed? Storage Will the application need to store data? Storage Will the application need to store data?

13. Sixth Edition James A. O’Brien 13 M a n a g e m e n t I n f o r m a t i o n S y s t e m s Irwin/McGraw-Hill Copyright © 2004, The McGraw-Hill Companies, Inc. All rights reserved. Evaluating Hardware and Software Hardware Evaluation Factors Performance Cost Reliability Compatibility Technology Ergonomics Connectivity Scalability Support ($ ?) Software Software Evaluation Factors Quality Efficiency Flexibility Security Connectivity Language Documentation Hardware Plus