Information Systems Development Methodologies By Zainal A. Hasibuan Faculty of Computer Science University of Indonesia

Information Systems Development Methodologies Structured Analysis, Design and Implementation of Information Systems (STRADIS) Yourdon Systems Method (YSM) Information Engineering (IE) Structured Systems Analysis and Design Methodology (SSADM) Merise Jackson Systems Development (JSD) Object-oriented Analysis Information Systems Work and Analysis of Changes (ISAC) Effective Technical and Human Implementation of Computer-based Systems (ETHICS) Soft System Methodology (SSM) Multiview Process Innovation Rapid Application Development (RAD) KADS Euromethod

Structured Analysis, Design and Implementation of Information Systems (STRADIS) by Gane and Sarson The main techniques used: Process-oriented of function decomposition DFD Decision trees Decision tables Structure English

Yourdon System Method (YSM) by Ed Yourdon Process-oriented Event partitioning approach as compare to top-down approach (functional decomposition) Greater emphasis on analysis of data if compared to STRADIS

Information Engineering (IE) by James Martin and Clive Finkelstein More emphasis on data Data-oriented entity-relationship approach Extended to planning phase as the first step in the methodology

Structured Systems Analysis and Design Method (SSADM) by Learmonth and Burchett A standard in most UK government applications Modern version of the traditional IS development life cycle DFD Entity life histories Recommends the use of CASE tools and workbenches

Merise Widely used in France Consider equally important of process and data aspects and analyzed and designed in parallel

Jackson Structured Design (JSD) by Michael Jackson Had a profound effect on the teaching and practice commercial computer programming It concentrates on the design of efficient and well-tested software which reflects the specification It has links with formal methods More applicable to applications where efficiency is paramount—for example in process control applications

Coad and Yourdon’s Object-oriented Analysis It reflects the view that in defining objects and their component parts (attributes) we capture the essential building blocks of information systems It is a unifying approach, as analysis and design can be undertaken following this approach Applications developed using object programming languages and CASE tools Leads to consistency throughout

Information Systems Work and Analysis (ISAC) by Mats Lunderberg (Scandinavia) Seeks to identify the fundamental causes of users’ problems and suggests ways to overcome Analyze the activities and the initiation of change processes People-oriented approach with emphasis on the analysis of change and the change processes Solution not necessarily use of computer information system

Effective Technical and Human Implementation of Computer-based Systems (ETHICS) by Enid Mumford People-oriented based on participation Attempts to embody a sound ethical position It encompasses the socio-technical view The technology must fit closely with the social and organizational factors in application domain

Soft Systems Methodology (SSM) by Peter Checkland Influenced by System approach Its rationale is that the properties of whole system are not entirely understandable in terms of the properties of the constituent elements “the whole is greater than the sum of the parts” Present the fuzzy and ill-structured situation not just technological problems

Multiview Hybrid: SSM, ETHICS, process modeling and data modeling A contingency approach: techniques and tools being used as the problem situation demand

Process Innovation by Devenport Tie business process re-engineering with information technology and information systems IT being seen as the primary enabler of process innovation as it gives an opportunity to change processes completely

Rapid Application Development (RAD) The need to develop IS more quickly It based on the evolutionary, prototyping approach Enabled by using CASE and system repository User requirements are often determined through JAD

The Expert Systems Approach (KADS) The outcome of a European Union ESPRIT research project A comprehensive, commercially viable methodology for knowledge-based system construction Use to Develop Expert systems

Euromethod Results from a European initiative It is more a framework for planning, procurement and management of services for the investigation, development or amendment of IS a methodology