The quality and reliability of software today is expected to be extremely high. Software is being included in engines of automobiles, robots, x-ray machines at hospitals; it is no surprise that software is expected to operate correctly almost all the time. This reliability comes at a cost of increasing complexity. With the increase in complexity, software development teams are getting larger and maintenance is becoming more difficult. Although developers are dealing with these problems project dates are still very rigorous and projects can seem impossible to complete on time. Due to these problems, software development costs are rising which is increasing the cost of software for consumers. Without new practices to develop software these costs will continue to rise and profits will continue to fall. Software reuse can help shape the future of software development. Much of the cost and effort for software engineering come from the continual re-discovery and re-invention of patterns and components developed throughout the software industry. By using a repository developers can upload assets to a shared library for themselves or others to use at a later time. Assets can be anything used during the development process such as documentation, designs, components, knowledge base and source code. Using these shared repositories developers can prevent ‘reinventing the wheel’ and focus their efforts on new problems instead of ones that have been solved countless times before. The purpose of this paper is to discuss software reuse and the technologies used to share them and why software reuse isn’t living up to its reputation. If assets have already been developed for a particular scenario there shouldn’t be a reason to ‘rein... ... middle of paper ... ...elopment methods for an increase in their quality, productivity, and lower maintenance costs. References Works Cited Desouza, Kevin. “Four Dynamics for Bringing Reuse Back into Software Reuse.” Communication in ACM. Vol 49 No 1. January 2005. Jordan, Kimberly. Software Reuse Term Paper. 1997. Schmidt, Douglas. “Why Software Reuse has Failed and How to Make It Work for You.” C++ Report Magazine. January 1999. Sommerville, Ian. Software Engineering 8. Addison-Wesley Publishers, 2007 “Code Reuse.” Wikipedia, The Free Encylopedia. 28 Mar 2007, 19:35 UTC. Wikimedia Foundation, Inc. 14 April 2007 “Hidden Costs of Code Reuse.” Information Week. 9 Nov, 1998. 14 April 2007
Researches who discuss workflow emphasize the importance of using a system to handle the many programs and the data files that are a standard part of a research project. Files may be developed, used, and updated by multiple members of a research team. Therefore, it is imperative that members of the team agree on a set of guidelines for naming, revising, and storing files. In the earlier example of documentation, the initial comment of a program file included who prepared the file and when it was last updated. This is good procedure to follow and essential to version control. A set of procedures designed to record changes to files so that those working with the files know when they were created and updated. A online system is called a git and widely used through the website GitHub. Although it was designed initially for software developers, it has become popular among scientific researchers as an online location to collaborate on research projects and share
Some software systems have a relatively short lifetime (many web-based systems), others have a lifetime of tens of years (large command and control systems). Some systems have to be delivered quickly if they are to be useful. The techniques used to develop short-lifetime, rapid delivery systems (e.g. use of scripting languages, prototyping, etc.) are inappropriate for long-lifetime systems which require techniques that allow for long-term support such as design modelling.
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.
---. “Sharing the Software.” Digital Chameleon: The Rise of Computer Emulation. 13 Sep. 1999. Zophar’s Domain. 25 Oct. 2000.
Standardize procedures and project management. E.g. use the same language or coding and decoding of software.
Johnson, R. and Foote, B. (1988) “Designing reusable classes”. In: Journal Of Object-Oriented Programming, v.1, n. 2, p. 22-35, Jun./Jul.
Jackson, F., and Pettit, P., 1990, 'Program Explanation: a general perspective', Analysis, vol. 50, pp. 107-117.
6. Lemos, Robert, Microsoft developers feel Windows pain, 7 Feb 2002, CNet News.com, 12 Mar. 2004, < http://news.com.com/2100-1001_3-832048.html>
1.0 IntroductionIn this report I will be concentrating on the failure of software systems. To understand why software systems fail we need to understand what are software systems. Software systems are a type of information system. This is because a software system is basically a means for hardware to process information. Flynn’s definition of an information system is:"An information system provides procedures to record and make available information, concerning part of an organization, to assist organization-related activities."Humans have been processing information manually for thousands of years, but with the vast increase of demand for knowledge this century has meant that a new method of information processing has been needed. Software systems have provided a new means that is much faster and efficient.
Early fixing of errors not only helps save cost but also helps in mitigating the various risks associated with software development and it also helps in improving and monitoring quality of the system etc. It has been proven that the cost to identify and mitigate the errors in the early stages of development of a software will be hundred times less than the cost of removing an error in the software system that has been distributed among hundreds of
In the world of software development, there are at least five risk management methodologies. Boehm’s Software Risk Management model focuses on the concept of “risk exposure” as defined by the relationship where the probability of an unsatisfactory outcome and the loss due to the unsatisfactory outcome determine the valence of the risk event. The method developed by Boehm is the original Risk Management
For years, C++ (C Plus Plus) has dominated the business market place for many different companies and has allowed many computer programmers to obtain vast amounts of knowledge and experience since 1972 when it was first developed by Dennis Ritchie of AT&T Bell Laboratories (Lambert / Nance Page 16). It has been in use for almost thirty years – not to mention the years before when it’s precursor C was developed and commonly used also – and has made a great impact on the development of software for business’ across the world. It has become a second nature programming language to those that use it and have been forced to stay with C++.
SDLC (Software Development Life Cycle) is a process which consists of series of well-planned actions to develop or make changes in the software products. This chapter provides description on the SDLC basics, SDLC models and their application in the software industry. This gives directions for the quality stakeholders of any Software project and the product or project managers.
Component Based Architecture creates a system that is easily extensible, promotes software reuse and intuitively understandable. A component often relates to an object in Object Orientated Programming. The RUP provides a systematic way to build this kind of system, focusing on producing an early executable architecture before committing full resources on a project.
In recent years a cognizance has grown of the importance of software architecture. ”The software architecture of a system is the structure or structures of the system, which comprise software components, the externally visible properties of those components, and the relationships among them”-- Bass et al [1]. Software architectures are essential because they represent the single concept for understanding the structure of a system and form the basis for a collective understanding of a system and all its benefactors. The IEEE recommendation outlines architecture as the fundamental organization of a system embodied in its modules, their relationships to each other and to the environment and the main beliefs guiding its design and evolution.