Chapter 14. Building Information Systems. Information System Components. A system is a set of related components that produce specified results, from launching the space shuttle to operating your microwave oven, information systems are everywhere.
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Building Information Systems
CANNOT BE SCALED UP
OLD, REPLACEMENT PRRTS IS A PROBLEM
ADDITIONAL OR DIFFERENT OUTPUT
NEW TECHNOLOGY IS AVAILABLE
CHANGED OR NEW REGULATORY REQUIREMENTS
SYSTEMS CHANGES NEEDED TO CONFORM TO COMPANY RULES, POLICIES, CULTURE, UNION AGREEMENTS
CHANGES IN THE ORGANIZATION
E.G., A NEW PRODUCT LINE; NEW LOCATIONS; STRUCTURE REPORTING RELATIONSHIPS
CHANGES IN THE BUSINESS MODEL
E.G., NOW WANT BRICKS AND CLICKS
OPPORTUNITIES MAY BE SEEN BECAUSE OF BPR
NEWER TECHNOLOGY MAY BE FASTER, MORE RELIABLE
SAVE PROCESSING, LABOR COSTS
NEW CAPABILITIES PROVIDED BY NEW TECHNOLOGY MAY PROVIDE A COMPETITIVE ADVANTAGE
THE FINAL ANALYSIS STAGE ACTIVITY
MAY BE A VERY LONG DOCUMENT
MUST BE AGREED TO BY USERS
REPRESENTS THE SYSTEM OBJECTIVES
HOW MANY TRANSACTIONS PER HOUR?
HOW MUCH RELIABILITY?
WHAT KIND OF SECURITY?
WHO MUST RECEIVE REPORTS ABOUT WHAT?
E.g., Blue Cross & Blue Shield Develop an award-winning application using RAD.
Typical RAD packages include the following:
GUI development environment
Programming languageRapid Application Development
Receive Sales Order
Check Customer Status
Verify Customer Credit
Completed Sales Order
Enter Customer Order Data