Software Engineering (SWENG) 1
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Testing in the Software Development Life Cycle and Its Importance
International Journal of Engineering and Information Systems (IJEAIS) ISSN: 2643-640X Vol. 3 Issue 9, September – 2019, Pages: 15-20 Testing in the Software Development Life Cycle and its Importance Noortaj Department of Computing and Technology Abasyn University Peshawar, Pakistan Email: [email protected] Abstract : Software development life cycle is a structure followed by the development team within the software organization imposed on the development of software product. The important role of testing in the software development life cycle is to improve the performance, reliability, and quality of the software. I believe testing should be thoroughly planned and conducted throughout the Software development life cycle for best results. Hence, software testing is facing different challenges. In this article, i have explained different phases of the software development life cycle, different testing techniques and its importance. Keywords: Software Development Life Cycle Testing, Testing in the Software Development Process, Software Testing, Importance of testing. 1. INTRODUCTION Testing plays an important role in the software development life-cycle to recognize the defects in the development process and resolve those defects. But before the explanation of the Software development life cycle, I would like to explain the phases of the software development process. Phase 1 Requirement collection and Analysis: For the collection of requirements a discussion is conducted to analyze the requirements and to state how the problem should be solved. The main work of the requirement collection is to determine the anticipated issues and it helps companies to finalize the necessary timeline in order to complete the work of that system in time. -
Project Management © Adrienne Watt
Project Management © Adrienne Watt This work is licensed under a Creative Commons-ShareAlike 4.0 International License Original source: The Saylor Foundation http://open.bccampus.ca/find-open-textbooks/?uuid=8678fbae-6724-454c-a796-3c666 7d826be&contributor=&keyword=&subject= Contents Introduction ...................................................................................................................1 Preface ............................................................................................................................2 About the Book ..............................................................................................................3 Chapter 1 Project Management: Past and Present ....................................................5 1.1 Careers Using Project Management Skills ......................................................................5 1.2 Business Owners ...............................................................................................................5 Example: Restaurant Owner/Manager ..........................................................................6 1.2.1 Outsourcing Services ..............................................................................................7 Example: Construction Managers ..........................................................................8 1.3 Creative Services ................................................................................................................9 Example: Graphic Artists ...............................................................................................10 -
Definition of Software Construction Artefacts for Software Construction
Chapter 3: Internet and Applications Definition of Software Construction Artefacts for Software Construction M.Zinn, G.Turetschek and A.D.Phippen Centre for Information Security and Network Research, University of Plymouth, Plymouth United Kingdom e-mail: [email protected]; [email protected], [email protected] Abstract The definition of a service based software construction process, published in 2007 (Zinn, 2007), builds on the use of software construction artefacts (SCA). These artefacts form useable building blocks (units of modelling) for software, which can be implemented in a software product by a service. The building blocks are categorized in four different types (GUI, data, function and structure). The foundation for the use of these artefacts is the method of the software construction process which constructs the software similar to the methods used in computer aided design (CAD). This paper refines and expands on the definition of the artefacts to present the current state of research in software construction procedures. It will show how the artefacts are constructed and how they can be used in software construction. In addition the software construction artefacts will be compared to components, modules and objects. Based on this definition of the application area, further potential scenarios for the use of the artefacts, as well as their properties and points still being worked on, are shown. The purpose is to create a more exact description, definition of the software construction artefacts to obtain a better understanding of the software construction process. Keywords Computer Aided Design (CAD), software construction process (SCP), software engineering, (web) services, software construction artefacts (SCA) and software construction services (SCS), model driven development (MDD) 1. -
A Parallel Program Execution Model Supporting Modular Software Construction
A Parallel Program Execution Model Supporting Modular Software Construction Jack B. Dennis Laboratory for Computer Science Massachusetts Institute of Technology Cambridge, MA 02139 U.S.A. [email protected] Abstract as a guide for computer system design—follows from basic requirements for supporting modular software construction. A watershed is near in the architecture of computer sys- The fundamental theme of this paper is: tems. There is overwhelming demand for systems that sup- port a universal format for computer programs and software The architecture of computer systems should components so users may benefit from their use on a wide reflect the requirements of the structure of pro- variety of computing platforms. At present this demand is grams. The programming interface provided being met by commodity microprocessors together with stan- should address software engineering issues, in dard operating system interfaces. However, current systems particular, the ability to practice the modular do not offer a standard API (application program interface) construction of software. for parallel programming, and the popular interfaces for parallel computing violate essential principles of modular The positions taken in this presentation are contrary to or component-based software construction. Moreover, mi- much conventional wisdom, so I have included a ques- croprocessor architecture is reaching the limit of what can tion/answer dialog at appropriate places to highlight points be done usefully within the framework of superscalar and of debate. We start with a discussion of the nature and VLIW processor models. The next step is to put several purpose of a program execution model. Our Parallelism processors (or the equivalent) on a single chip. -
Object-Oriented Software Construction Oriented Software Construction Software Construction I Software Construction II
ObjectObject--orientedoriented software construction Analysis/Requirements: What am I doing? Design: Which classes and methods? Implementation: How do I do it? Testing: Does it work? Maintenance: I just turn it in, right? Software Construction I z Programming is not just coding and debugging! z Analysis Analysis – English description of what system models, Design to meet a requirement or specification Implementation – Usually involves working with non-programmer Testing Maintenance to develop detailed specifications Waterfall model of software development z DiDesign: Mtit!Measure twice, cut once! – divide & conquer: system is composed of smaller subsystems which in turn may be composed of even smaller subsystems z OOP, system is decomposed into a set of cooperating objects – Pseudocode: describe tasks, subtasks, and how they relate – hand-simulation: desk-check pseudocode by stepping through it without using a computer – often use diagrams to better communicate the structure of the system z Often flowcharts in procedural languages and UML diagrams in OOP Wright State University, College of Engineering CS 241 Dr. T. Doom, Computer Science & Engineering Computer Programming II 58 Software Construction II z Implementation – Pick a language Analysis Design – emphasize good problem decomposition, Implementation well structured design, and readable, Testing well-documented programming style Maintenance –mayyg need to backtrack and redesign Waterfall model of software development z Testing – submitting input data or sample user interactions and seeing if program reacts properly – typically done in stages, starting with individual components and working up to subsystems, and eventually the entire program – bugs: errors in code or design – debugging: process of removing program bugs Wright State University, College of Engineering CS 241 Dr. -
Identifying and Defining Relationships: Techniques for Improving Student Systemic Thinking
AC 2011-897: IDENTIFYING AND DEFINING RELATIONSHIPS: TECH- NIQUES FOR IMPROVING STUDENT SYSTEMIC THINKING Cecelia M. Wigal, University of Tennessee, Chattanooga Cecelia M. Wigal received her Ph.D. in 1998 from Northwestern University and is presently a Professor of Engineering and Assistant Dean of the College of Engineering and Computer Science at the University of Tennessee at Chattanooga (UTC). Her primary areas of interest and expertise include complex process and system analysis, process improvement analysis, and information system analysis with respect to usability and effectiveness. Dr. Wigal is also interested in engineering education reform to address present and future student and national and international needs. c American Society for Engineering Education, 2011 Identifying and Defining Relationships: Techniques for Improving Student Systemic Thinking Abstract ABET, Inc. is looking for graduating undergraduate engineering students who are systems thinkers. However, genuine systems thinking is contrary to the traditional practice of using linear thinking to help solve design problems often used by students and many practitioners. Linear thinking has a tendency to compartmentalize solution options and minimize recognition of relationships between solutions and their elements. Systems thinking, however, has the ability to define the whole system, including its environment, objectives, and parts (subsystems), both static and dynamic, by their relationships. The work discussed here describes two means of introducing freshman engineering students to thinking systemically or holistically when understanding and defining problems. Specifically, the modeling techniques of Rich Pictures and an instructor generated modified IDEF0 model are discussed. These techniques have roles in many applications. In this case they are discussed in regards to their application to the design process. -
6.005 Elements of Software Construction Fall 2008
MIT OpenCourseWare http://ocw.mit.edu 6.005 Elements of Software Construction Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. 10/15/2008 Today’s Topics how to avoid debugging ¾assertions ¾code reviews how to do it when you have to ¾reducing test cases ¾hypothesis-driven debugging ¾binary search Debugging very hard bugs Rob Miller ¾Heisenbugs Fall 2008 © Robert Miller 2008 © Robert Miller 2008 Defensive Programming First Defense: Impossible By Design first defense against bugs is to make them impossible in the language ¾Java makes buffer overflow bugs impossible ¾automatic array bounds checking make buffer overflow bugs impossible second defense against bugs is to not make them ¾static typing eliminates many runtime type errors ¾correctness: get things riihght first time in the protocols/libraries/modules third defense is to make bugs easy to find ¾TCP/IP guarantees that data is not reordered ¾local visibility of errors: if things fail, we'd rather they fail loudly and ¾BigInteger guarantees that there will be no overflow immediately – e.g. with assertions in self-imposed conventions fourth defense is extensive testing ¾immutable objects can be passed around and shared without fear ¾uncover as many bugs as possible ¾caution: you have to keep the discipline last resort is dbidebugging • get the language to hel p you as much as possible , e.g. with pritivate and final ¾needed when effect of bug is distant from cause © Robert Miller 2008 © Robert Miller 2008 1 10/15/2008 Second Defense: Correctness Third Defense: Immediate Visibility get things right the first time if we can't prevent bugs, we can try to localize them to ¾don’t code before you think! Think before you code. -
Pm4dev, 2016 –Management for Development Series ©
pm4dev, 2016 –management for development series © Project Quality Management PROJECT MANAGEMENT FOR DEVELOPMENT ORGANIZATIONS Project Quality Management PROJECT MANAGEMENT FOR DEVELOPMENT ORGANIZATIONS A methodology to manage development projects for international humanitarian assistance and relief organizations © PM4DEV 2016 Our eBook is provided free of charge on the condition that it is not copied, modified, published, sold, re-branded, hired out or otherwise distributed for commercial purposes. Please give appropriate citation credit to the authors and to PM4DEV. Feel free to distribute this eBook to any one you like, including peers, managers and organizations to assist in their project management activities. www.pm4dev.com Project Quality Management PROJECT QUALITY MANAGEMENT Quality management is the process for ensuring that all project activities necessary to design, plan and implement a project are effective and efficient with respect to the purpose of the objective and its performance. Project quality management (QM) is not a separate, independent process that occurs at the end of an activity to measure the level of quality of the output. It is not purchasing the most expensive material or services available on the market. Quality and grade are not the same, grade are characteristics of a material or service such as additional features. A product may be of good quality (no defects) and be of low grade (few or no extra features). Quality management is a continuous process that starts and ends with the project. It is more about preventing and avoiding than measuring and fixing poor quality outputs. It is part of every project management processes from the moment the project initiates to the final steps in the project closure phase. -
Integration Testing of Object-Oriented Software
POLITECNICO DI MILANO DOTTORATO DI RICERCA IN INGEGNERIA INFORMATICA E AUTOMATICA Integration Testing of Object-Oriented Software Ph.D. Thesis of: Alessandro Orso Advisor: Prof. Mauro Pezze` Tutor: Prof. Carlo Ghezzi Supervisor of the Ph.D. Program: Prof. Carlo Ghezzi XI ciclo To my family Acknowledgments Finding the right words and the right way for expressing acknowledgments is a diffi- cult task. I hope the following will not sound as a set of ritual formulas, since I mean every single word. First of all I wish to thank professor Mauro Pezze` , for his guidance, his support, and his patience during my work. I know that “taking care” of me has been a hard work, but he only has himself to blame for my starting a Ph.D. program. A very special thank to Professor Carlo Ghezzi for his teachings, for his willingness to help me, and for allowing me to restlessly “steal” books and journals from his office. Now, I can bring them back (at least the one I remember...) Then, I wish to thank my family. I owe them a lot (and even if I don't show this very often; I know this very well). All my love goes to them. Special thanks are due to all my long time and not-so-long time friends. They are (stricty in alphabetical order): Alessandro “Pari” Parimbelli, Ambrogio “Bobo” Usuelli, Andrea “Maken” Machini, Antonio “the Awesome” Carzaniga, Dario “Pitone” Galbiati, Federico “Fede” Clonfero, Flavio “Spadone” Spada, Gianpaolo “the Red One” Cugola, Giovanni “Negroni” Denaro, Giovanni “Muscle Man” Vigna, Lorenzo “the Diver” Riva, Matteo “Prada” Pradella, Mattia “il Monga” Monga, Niels “l’e´ semper chi” Kierkegaard, Pierluigi “San Peter” Sanpietro, Sergio “Que viva Mex- ico” Silva. -
Project System (PS) ESPS D N.I
Project System (PS) ESPS D N.I ADDO Release 4.6C Project System (PS) SAP AG Copyright © Copyright 2001 SAP AG. All rights reserved. No part of this publication may be reproduced or transmitted in any form or for any purpose without the express permission of SAP AG. The information contained herein may be changed without prior notice. Some software products marketed by SAP AG and its distributors contain proprietary software components of other software vendors. Microsoft®, WINDOWS®, NT®, EXCEL®, Word®, PowerPoint® and SQL Server® are registered trademarks of Microsoft Corporation. IBM®, DB2®, OS/2®, DB2/6000®, Parallel Sysplex®, MVS/ESA®, RS/6000®, AIX®, S/390®, AS/400®, OS/390®, and OS/400® are registered trademarks of IBM Corporation. ORACLE® is a registered trademark of ORACLE Corporation. TM INFORMIX®-OnLine for SAP and Informix® Dynamic Server are registered trademarks of Informix Software Incorporated. UNIX®, X/Open®, OSF/1®, and Motif® are registered trademarks of the Open Group. HTML, DHTML, XML, XHTML are trademarks or registered trademarks of W3C®, World Wide Web Consortium, Massachusetts Institute of Technology. JAVA® is a registered trademark of Sun Microsystems, Inc. JAVASCRIPT® is a registered trademark of Sun Microsystems, Inc., used under license for technology invented and implemented by Netscape. SAP, SAP Logo, R/2, RIVA, R/3, ABAP, SAP ArchiveLink, SAP Business Workflow, WebFlow, SAP EarlyWatch, BAPI, SAPPHIRE, Management Cockpit, mySAP.com Logo and mySAP.com are trademarks or registered trademarks of SAP AG in Germany and in several other countries all over the world. All other products mentioned are trademarks or registered trademarks of their respective companies. -
Using IDEF and QFD to Develop an Organizational Decision Support Methodology for the Strategic Justification of Computer-Integrated Technologies
UTTERWORTH lnternational JournalofProjectManagement Vol. 13, No. 3, pp. 177-185, 1995 E I N E M A N N Elsevier Science Ltd S Printed in Great Britain 0263-7863/95 210.00+ 0.00 0263-7863 (94) 00008-5 Using IDEF and QFD to develop an organizational decision support methodology for the strategic justification of computer-integrated technologies Joseph Sarkis Department of Information Systems and Management Sciences, Box 19437, University of Texas at Arlington, Arlington, TX 76019, USA Donald H Liles Automation and Robotics Research Institute, 7300 Jack Newell Boulevard, Fort Worth, TX 76118, USA The paper presents some issues relevant to the strategic justification of computer-integrated enterprise technologies for small and medium-sized manufacturing enterprises. To address the issue of making a strategic justification or 'business case' for these technologies, an organizational decision-making methodology that incorporates the strategies of the firm is needed, among other requirements. A research and development approach that integrates Quality Function Deployment and IDEF0 functional modeling to determine the requirements and processes for the justification methodology is presented. This approach has implications for future research and development for similar organizational decision-support processes and business-process reengineering. Keywords: quality-function deployment, IDEFO, strategic justification Current and future directions in the US domestic industrial CIE technologies are necessary to help enterprises become economy point to further global competitive pressures on agile enough to form interorganizational ad hoc partner- manufacturing enterprises of all sizes. For organizations to ships that emphasize each enterprise's core competencies ~. be able to compete on this global level, there need to be Examples of some of these technologies are computer- national and industrial visions, as well as enterprise-level integrated manufacturing systems, flexible manufacturing visions. -
Effective Methods for Software Testing
Effective Methods for Software Testing Third Edition Effective Methods for Software Testing Third Edition William E. Perry Effective Methods for Software Testing, Third Edition Published by Wiley Publishing, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2006 by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN-13: 978-0-7645-9837-1 ISBN-10: 0-7645-9837-6 Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 3MA/QV/QU/QW/IN No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copy- right Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4355, or online at http://www.wiley.com/go/permissions. Limit of Liability/Disclaimer of Warranty: The publisher and the author make no repre- sentations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fit- ness for a particular purpose. No warranty may be created or extended by sales or promo- tional materials.