Chapter 1 – Software and Software Engineering Overview Software is designed and built by software engineers. Software is used by virtually everyone in society. Software is pervasive in our commerce‚ our culture‚ and our everyday lives. Software engineers have a moral obligation to build reliable software that does no harm to other people. Software engineers view computer software‚ as being made up of the programs‚ documents‚ and data required to design and build the system. Software users are
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Advanced Information Systems Development Lesson 1 Software Quality 1 Software quality management • Concerned with ensuring that the required level of quality is achieved in a software product. • Involves defining appropriate quality standards and procedures and ensuring that these are followed. • Should aim to develop a ‘quality culture’ where quality is seen as everyone’s responsibility. 2 What is quality? • Quality‚ simplistically‚ means that a product should meet its
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traditional software metrics which could be applied to object–oriented programming and a set of object–oriented metrics (i.e. those designed specifically for object–oriented programming). Given the central role that software development plays in the delivery and application of information technology‚ managers are increasingly focusing on process improvement in the software development area. This demand has spurred the provision of a number of new and/or improved approaches to software development
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INTRODUCTION Valve software is a successful entertainment and software company with over 300 employees. Valve software wanted to create a working environment that empowered their employees and gave them the freedom to be creative. What they have achieved is a very successful company that operates on a ‘flat’ structure where there are no managers or supervisors to report to and all employees are equals. “The company tries to keep its structure flat to remove or reduce barriers between the employees
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week 9.4 Hours saved per DBA per year 52 * 9.4 489 Savings per DBA per year (unburdened) 489*$28.84 $14‚102 Savings per DBA per year (burdened) 489*$38.36 $18‚758 Average number of DBA’s 10 Annual savings for firm per year (unburdened) 10*$14‚102 $141‚020 Annual savings for firm per year (burdened) 10*$18‚758 $187‚580 2. Precise SQL also helps with respect to deferral of hardware replacement decision. Answer the following questions on hardware deferral What is the probability
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Computer software engineers use the basics and techniques of computer science‚ engineering‚ and mathematical analysis to the design‚ development‚ testing‚ and evaluation of the software and systems that enable computers to perform their many different tasks. According to the Bureau of Labor Statistics‚ computer software engineers are projected to be one of the fastest growing occupations over the 200212 period. The starting salaries for computer engineers with a bachelor’s degree can be higher
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The Fraunhofer IESE Series on Software Engineering The Fraunhofer IESE Series on Software Engineering Albert Endres & Dieter Rombach ‘giving the reader a proven basis for engineering complex software systems’ A Handbook of Software and Systems Engineering Empirical Observations‚ Laws and Theories The book is structured around the software development lifecycle. It begins with requirements definition and goes on to maintenance and withdrawal. In different process models‚ these
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Boehm’s second law 4 Example 4 Davis’ law 5 Waterfall model 5 Spiral Model 7 Waterfall model with Glass’ Law 8 Waterfall model with Boehm’s First Law 9 Waterfall model with Boehm’s Second Law 9 Waterfall model with Davis Law 10 Spiral model with Glass Law 10 Spiral model with Boehm’s First Law 11 Spiral model with Boehm’s Second Law 11 Spiral model with Davis’ Law 11 Waterfall Model 12 Examples where this model suits 12 Examples where this model does not suit 12 Spiral Model 13
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Evolution of Software The Early Years (50’s – 60’s) * This generation was characterized by Batch orientation‚ limited distribution‚ and customization of software. * In Batch Processing‚ the system handles an entire sequence of jobs together‚ often with little or no human intervention. * Also‚ as computers were not widely used at that time‚ only in scientific and military institutions‚ software could be highly customized since distribution was limited. Job mobility was low‚ and the
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Database Software The acquisition of database software for business information management is a source of business leverage in the ever competitive business environment. The management of business information is made possible by the acquisition of efficient database software. Database software is the term that refers to the computer program that helps to enter‚ update‚ organize‚ retrieve‚ and report information held in a computer database. Among the commonly used database software for personal
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