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System Development Cycle (sdlc)

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SCHOOL OF BUSINESS

UNIT TITLE: HIV/AIDS AND DRUG ABUSE

UNIT CODE:UCU105

NAMES REGISTRATION No.

1. Godlivian Bahati Ojiambo D33/1117/2011

2. Juliet Silantoi Koikai D33S/12258/2010

3. Okech Kelvin Otieno D33S/15775/2010

4. Eroro Collins D33S/12686/2010

5. Njoki Mbogo D33S/7484/2010

6. John Walubengo D33S/12363/2010

7. Elizabeth Wambui Nyambura D33S/13618/2010

8. Ruth Wambui Ngaru D33/0996/2011

9. Oweke Brian Omondi D33S/15849/2010

10. Winnie Chepkorir Kirui D33S/13654/2010

Date of submission: 6th March, 2012

© NAIROBI ,KENYA

SYSTEM ANALYSIS AND DESIGN (SCO 101) ASSIGNMENT

J17S/13146/2011

KAMAU JAMES WAMBUGU

Introduction

System Development Cycle (SDLC) is the process of understanding how an information system can support business needs, designing the system, build it, and deliver it to users.

Methodology is a formalized approach to implementing the SDLC (it is a list of steps and deliverables). There are variety of system development methodologies, each one is unique because of its emphasis on processes versus data and the order and focus it places on each SDLC phase.

All systems development methodologies lead to a representation of the system concept in terms of processes and data; however they vary in terms of whether the methodology places primary emphasis on business processes or on the data that supports the business.

Therefore we have:

i. Process - centered methodologies which focus first on defining the activities associated with the system- processes. Process centered utilizes process models as the core of the system concept. Analyst concentrated initially on representing the system concept as a set of processes with in formation flowing into and out of the processes.

ii. Data centered methodologies focus on first defining the contents of the data storage containers and how the contents are

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