NTT DATA Corporation
100 City Square
Boston, MA 02129
Tel: +1 800 745 3263 Fax: +1 617 241 9507
Email: info@nttdata.com
Software Development Iterative Methodology
(White Paper for NTT Data Gold Club)
Ashesh Kumar
BMS Version 10.01
STATEMENT OF CONFIDENTIALITY / DISCLAIMER
This document is the property of NTT Data and is produced in response to your request. No part of this document shall be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, to parties outside of your organization without prior written permission from NTT Data.
TABLE OF CONTENTS
1. ABOUT THE AUTHOR(S)/CONTRIBUTORS III
2. INTRODUCTION IV
3. CONTEXT V
4. SDLC FLOW OVERVIEW: VI
5. PROJECT METRICS –BURNDOWN CHARTS: VIII
6. RETROSPECTIVES: IX
7. FIVE TYPES OF SDLC PHASES: X
8. CONCLUSION: XIII
9. REFERENCES: XIV
1. About the Author(s)/Contributors
Ashesh Kumar, Senior Software Engineer, ALMAC, Hyderabad.
Ashesh Kumar is working with NTT Data and served client of Health care verticals. He has been the point of contact for testing efforts for clients like GlaxoSmithKline, NTS and ALMAC. Primary He has been a part of NTT Data for almost 3.0 years where he started as a fresh college graduate. He has gradually gained experience and knowledge being a part of GSK QA team, NTS and now into ALMAC. He has been working in ALMAC for almost a year now.
2. Introduction
This White paper is about Software development life cycle based on agile principles or software development iterative methodology .This white paper contains and talks about Software Development Lifecycle (SDLC) employed to create a major or minor software r...
... middle of paper ...
...rements can be incorporated in any stage of the software life cycle or during any of the five phases of pre-initiate, initiate, Plan, deliverable and close phase. This flexibility did not exist in the previous software development life cycles (e.g. waterfall model of software development life cycle).
In the new development life cycle Each major release is divided into sub-releases or what is know as ‘iterations’. All functional requirements are split into iterations so that the requirements can be effectively implemented as per the specifications provided by the client. After every iteration the software is reviewed and to verify and make sure that requirements have been adequately met and remaining changes could be implemented in subsequent iterations. Thus, changes can be implemented throughout the cycle.
9. REFERENCES:
• www.wikipedia.com
This model is most effective for developing business software systems because it is easier to change the process to reflect the updated customer requirements. The basic idea behind incremental method is to develop a system through repeated cycles (iterative) and in smaller portions at a time (incremental), thereby allowing software developers to take advantage of what was learned during development of earlier parts or versions of the system. Learning comes from both the development and use of the system, where possible key steps in the process start with a simple implementation of a subset of the software requirements and iteratively enhance the evolving versions until the full system is implemented. At each iteration, design modifications are made and new functional capabilities are
The Software Development Life Cycle is seldom used at my place of work. Unfortunately, recent developments in its use are deemed confidential. Due to this fact, this paper will examine in general terms one of the projects we are undertaking right now while at the same time attempting to maintain our confidentiality.
Answer: Software changes is inevitable. Change is inevitable in complex systems because of various causes like the requirements gathering, their design, specifications, user requirements etc. All software systems must evolve to meet the ever - expanding needs of its users. Gathering entire requirementsat a single stretch may sometimes be not possible for complex systems. In such cases, the changes are made to the systems after the development. Also, user requirements change from time to time. So to accomplish their requirements, changes are made. Designing complex systems and accomplishing all the needs and requirements is difficult in complex systems. So these are designed and developed with initial requirements and then changes are made to the existing
The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process.
in the mid-1990s. It is an outgrowth of, and extension to, Rapid Application Development (RAD) practices. The first two phases of DSDM are the feasibility study and the business study. During these two phases the base requirements are elicited. Further requirements are elicited during the development process. DSDM does not insist on certain techniques. Thus, any RE technique can be used during the development process. DSDM’s nine principles include active user involvement, frequent delivery, team decision making, integrated testing throughout the project life cycle, and reversible changes in
A software development methodology is a standard proven process which helps programmers, architects, system analysts and others to make a well controlled and an efficient progress in the high quality software development.
The reengineering plan will consist of the following phases: 1. Implementation Recovery - During implementation recover the purpose of the application is determined. By analyzing how the application is built and its’ behavior, you can sometimes predict its rules.
The system development life cycle, also know as the SDLC, is the process of designing and developing a system or software to meet certain requirements. (“System development life,”). This cycle involves many different phases, in which the system is planned, analyzed, designed, implemented, and tested. There are five major phases in the system development life cycle: systems planning, systems analysis, systems design, systems implementation, and systems security and support. Each of these phases has a particular responsibility and certain tasks are perfumed in each phase.
Efficient software development model will have six sigma of lean combined with software development life cycle (SDLC). At the end an analysis by survey reports, in which real world experiences will be reported.
The Systems Development Life Cycle (SDLC) consists of phases used in developing a piece of software. It is the plan of how to develop and maintain software, and when necessary, replace that software. In 2007 during my hospital’s transition to a new software system, I was fortunate enough to be included in the process. I did not get involved until the implementation phase, but from then on, until now, I remain very active in the process. I decided to highlight the Waterfall Model of SDLC. The Waterfall Model is a “sequential development process” with each phase continuing in a line (McGonigle and Mastrian, 2012, p. 205).
Given the time, it takes to develop large sophisticated software systems it not possible to define the problem and build the solution in a single step. Requirements will often change throughout a projects development, due to architectural constraints, customer’s needs or a greater understanding of the original problem. Iteration allows greater understanding of a project through successive refinements and addresses a projects highest risk items at every stage of its lifecycle. Ideally each iteration ends up with an executable release – this helps reduce a projects risk profile, allows greater customer feedback and help developers stay focused.
Goknil [6] the requirements of a systems cannot be static they are prone to change and new requirements emerge frequently. New and/or modified requirements are integrated with the existing ones, and adaptations to the architecture and source code of the system are made. The process of integration of the new/modified requirements and adaptations to the software system is called change management. The size and complexity of software systems make change management costly and time consuming. To reduce the cost of changes, it is important to apply change management as early as possible in the software development cycle. Requirements traceability is considered crucial in change management for establishing and maintaining consistency between software development artifacts. It is the ability to link requirements back to stakeholders’ rationales and forward to corresponding design artifacts, code, and test cases. When changes for the requirements of the software system are proposed, the impact of these changes on other requirements, design elements and source code should be traced in order to determine parts of the software system to be
In incremental model the whole requirements are divided into different builds. Multiple development cycles take place here. Cycles are divided up into smaller, more easily managed modules. Each module passes through the requirements, design, implementation and testing phases. A working version of software is produced during the first module.Each sub...
Therefore it is best that Sabre shouldn’t use work breakdown structure when working on their latest project but can consider to use the work breakdown structure in the future. Sabre has already adopted XP into their business and has claimed that XP has dramatically improved the quality and productivity of its 300 developers. Releases are another important aspect which work breakdown structure cannot apply because releases can only be tested using XP approach which will allow developers to test, prioritize the application’s most important features.
Agile software development is a group of software development methods based on iterative and incremental development, where requirements and solutions evolve through collaboration between self-organizing, cross-functional teams. It promotes adaptive planning, evolutionary development and delivery, a time-boxed iterative approach, and encourages rapid and flexible response to change.