THE TRADITIONAL SYSTEM DEVELOPMENT LIFE CYCLE
6.3 THE TRADITIONAL SYSTEM DEVELOPMENT LIFE CYCLE
D e v e l o p m e n t is a v e r y d e l i b e r a t e a n d o r d e r l y a p p r o a c h to m a k i n g a s y s t e m a reality. A methodology is needed to provide structure to system development. There are many " t r a d i t i o n a l " s y s t e m d e v e l o p m e n t life cycles ( S D L C s ) f o r i n f o r m a t i o n systems, i n c l u d - ing DSS. E v e r y c o m p u t e r - a i d e d s o f t w a r e e n g i n e e r i n g ( C A S E ) t o o l h a s a d o p t e d a vari-
a t i o n . F u r t h e r c o m p l i c a t i n g m a t t e r s , e a c h o r g a n i z a t i o n t h a t d e v e l o p s a s y s t e m c a n cre-
a t e i n - h o u s e v a r i a t i o n s t o suit its s p e c i f i c n e e d s . E a c h m e t h o d o l o g y e m p h a s i z e s
d i f f e r e n t s t e p s i n d i f f e r e n t ways. B u t all S D L C s t h a t m a k e i n t u i t i v e a n d p r a c t i c a l s e n s e m u s t f o l l o w c e r t a i n g u i d e l i n e s a n d processes.
Ideally, a n e e d of s o m e k i n d starts t h e process, a n d a c o m p l e t e d s y s t e m is its result.
A t r a d i t i o n a l S D L C consists o f f o u r f u n d a m e n t a l p h a s e s — p l a n n i n g , analysis, design,
a n d i m p l e m e n t a t i o n ( P A D I ) — w h i c h l e a d t o a d e p l o y e d s y s t e m ( F i g u r e 6.1). T h e sys- t e m i s a cycle b e c a u s e i t i s p o s s i b l e t o r e t u r n t o a n y p h a s e f r o m a n y o t h e r , t h o u g h a n ideal progression is to follow each phase in order. All projects must go through these phases. E a c h p h a s e consists of a series of steps, w h i c h rely on t e c h n i q u e s t h a t p r o d u c e deliverables. W e h a v e a d o p t e d t h e S D L C d e s c r i b e d b y D e n n i s a n d W i x o m (2003). I n T a b l e 6.1, w e s h o w t h e f u n d a m e n t a l p h a s e s , t h e steps, a n d t h e d e l i v e r a b l e s f o r e a c h step. T h e S D L C p r e s e n t a t i o n s e e m s t o b e l i n e a r , b u t a t a n y t i m e t h e p r o j e c t c a n b e
h a l t e d o r c a n r e t u r n t o a n e a r l i e r s t e p i n a n y p h a s e . This a p p l i e s t o W e b s y s t e m d e v e l - o p m e n t a s well, t h o u g h t h e r e a r e s o m e specific issues w h i c h w e discuss later. W e n o w discuss t h e p h a s e s a n d s t e p s ( s e e T a b l e 6.1). I n T a b l e 6.2, w e s h o w t h e s y s t e m d e v e l o p - ment phases and Web impacts.
Ideally, t h e p r o j e c t " f l o w s " d o w n a n d t o t h e right. T h e u p w a r d a r r o w s i n d i c a t e t h a t
C H A P T E R 6 DECISION SUPPORT SYSTEM DEVELOPMENT
F I G U R E 6 . 1 T H E TRADITIONAL SYSTEM DEVELOPMENT LIFE CYCLE
(SDL.C)
Parts
» Decision Support System And Intelligent System 7th Edition Turban Aronson Liang 2005
» DECISION -MAKING: THE INTELLIGENCE PHASE
» DECISION-MAKING: THE CHOICE PHASE
» SUPPORT FOR THE I N T E L L I G E N C E P H A S E
» OPENING VIGNETTE: DUPONT SIMULATES RAIL TRANSPORTATION SYSTEM AND AVOIDS COSTLY CAPITAL EXPENSE 1
» CERTAINTY, UNCERTAINTY, AND RISK 3
» MSS MODELING WITH SPREADSHEETS
» THE NATURE AND SOURCES OF DATA
» THE WEB/INTERNET AND COMMERCIAL DATABASE SERVICES
» DATABASE MANAGEMENT SYSTEMS IN DECISION SUPPORT SYSTEMS/BUSINESS INTELLIGENCE
» BUSINESS INTELLIGENCE/BUSINESS ANALYTICS
» Repeat steps 3 to 5 until you have reached the pre- specified maximum number of clusters.
» INTRODUCTION TO DSS DEVELOPMENT
» THE TRADITIONAL SYSTEM DEVELOPMENT LIFE CYCLE
» Obtaining executive-level buy-in. • Correctly estimate how difficult or complex a pro-
» PROTOTYPING: THE DSS DEVELOPMENT METHODOLOGY
» N A C T I O N 6.19 USER INVOLVEMENT IS CRITICAL IN SYSTEMS IMPLEMENTATION
» The four cells are organized along the two dimensions of time and place.
» Make money (sell your courseware)
» CREATIVITY AND IDEA GENERATION CREATIVITY
» EXECUTIVES' ROLES AND INFORMATION NEEDS
» SOFT INFORMATION IN ENTERPRISE SYSTEMS
» SUPPLY AND VALUE CHAINS AND DECISION SUPPORT
» SUPPLY CHAIN PROBLEMS AND SOLUTIONS INTRODUCTION
» CUSTOMER RELATIONSHIP (RESOURCE) MANAGEMENT (CRM) SYSTEMS
» BEST THINGS YOU CAN DO WITH YOUR DATA
» FRONTLINE DECISION SUPPORT SYSTEMS
» THE FUTURE OF EXECUTIVE AND ENTERPRISE INFORMATION SYSTEMS 2
» APPROACHES TO KNOWLEDGE MANAGEMENT THE PROCESS APPROACH
» EVOLUTION OF ARTIFICIAL INTELLIGENCE
» THE ARTIFICIAL INTELLIGENCE FIELD
» PROBLEM AREAS SUITABLE FOR EXPERT SYSTEMS
» KNOWLEDGE ACQUISITION FROM MULTIPLE EXPERTS
» KNOWLEDGE VERIFICATION AND VALIDATION
» S I N A C T I O N 11.9 RULE-BASED SYSTEMS TACKLE EMPLOYEE SHRINK
» Search the Internet to find a knowledge-acquisition development of Web-based expert systems. How
» BASIC CONCEPT OF NEURAL COMPUTING
» DEVELOPING NEURAL NETWORK-BASED SYSTEMS
» DEVELOPING GENETIC ALGORITHM APPLICATIONS
» DEVELOPING INTEGRATED ADVANCED SYSTEMS
» X 2 . Again, how well did this work? Plot your
» OPENING VIGNETTE: SPARTAN USES INTELLIGENT SYSTEMS TO FIND THE RIGHT PERSON AND REDUCE TURNOVER
» WEB-BASED INTELLIGENT SYSTEMS
» INTELLIGENT AGENTS: AN OVERVIEW
» M-COMMERCE, L-COMMERCE, AND PERVASIVE COMPUTING
» OPENING VIGNETTE: ELITE CARE SUPPORTED BY INTELLIGENT SYSTEMS
» THE IMPACTS OF MSS: AN OVERVIEW
» DECISION-MAKING AND THE MANAGER'S JOB
» ISSUES OF LEGALITY, PRIVACY, AND ETHICS
» INTELLIGENT SYSTEMS AND EMPLOYMENT LEVELS
» Rosati. (2001, September). "Data Integration in Celik, M. (2001, July). "Catching Up with Expert
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