developing software systems based on software reuse

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People interested in software reuse because they want to build systems that are large, reliable, less expensive, more complex and delivered on time. Software reuse also increases the speed of completion of a software project. or updating software systems using previously created or existing assets [18, 19]. trailer %PDF-1.7 %���� Furthermore, component-based usability testing should be considered when software components directly interact with users. endstream 75 0 obj We examine the repositories for 25 software systems ranging from 3,000 to 112,000 source lines from this software environment. 0000002676 00000 n Fortunately, component-based software … x��{ |SU����myٓfi���F�R Large scale component reuse leads to savings in 0000021473 00000 n CBSE aims to design and construct software systems with reusable software components [7]. The system development process focuses on integrating these components into a system rather than developing them. Software Engineering (QIP) slide1 What is software reuse? Software engineering covers activities that are necessary to develop a software system. In this book, Carma McClure takes software reuse beyond "good intentions," by presenting specific reuse techniques that have repeatedly helped companies lower costs and improve quality. Software engineering has been more focused on original development but it is now recognised that to achieve better software, more quickly and at lower cost, we need to adopt a design process that is based on "[email protected]���/H�L��ɱ�`.�+�^���� • Software reuse is the process of creating software systems from existing software systems • Reuse is like a savings account. Reuse-based software development The reuse approach to software development has been used for many years. designs for families of software systems or subsystems [13]. A software development process (also known as a software development methodology, model, or life cycle) is a framework that is used to structure, plan, and control the process of developing information systems. <> 1. Reuse success factors in Asset-Based Development (Ackerman et al. 0000013383 00000 n Component reuse • Components of an application from sub-systems to single objects may be reused. Software reuse is the use of software resources from all stages of the software development process in new applications. Developing software that achieves these qualities is hard; systematically developing high quality reusable software components and frameworks is even harder [GoF:95]. Software engineering has been more focused on original development but it is now recognised that to achieve better software, more quickly and at lower cost, we need a design process that is based on systematic software reuse. "Databases of this type are currently under development," he says. Developing new software systems is expensive, and maintaining them is even more expensive. ⊗ Software development with reuse ⊗ Software development for reuse ⊗ Generator-based reuse ⊗ Application system portability ©Ian Sommerville 1995 Software Engineering, 5th edition. <> 73 0 obj and the ordering of these activities. Traditionally, code and algorithms have been reused in an ad-hoc manner. In software engineering, Component-Based-Software-Engineering (CBSE) is one of the techniques to implement software reuse [7, 12]. 3 0 obj Software Reuse in Information Systems Development Marcus A. Rothenberger University of Wisconsin - Milwaukee, ... based reuse environment. endobj Williams [20] stressed that software reuse is something that has gained widespread attention of software developers for years but has failed to be fully practised to a significant degree. Software reuse In most engineering disciplines, systems are designed by composing existing components that have been used in other systems. Programmers should design and implement software components in such a way that many different programs can reuse them. (2000) Software Reuse and System Evolution. �G�T���v���?��tT���A��dL#�R�P8��s����o�����m~v�1y��s��=� Y|� �GNAbi�kc�~���NA���c�[email protected]|�G~ '|O�dΐ��pM{`� ̄�� Cite this chapter as: Lu R., Jin Z. endobj <>stream 0000004891 00000 n There has been a … are keeping in mind while developing Software Reuse System. Finally, we define a methodology for a most demanding case. Help us understand how you use our websites. On this kind of embedded systems, developing a platform of common embedded software is always a winning move, even in the worst scenario. Q���`2���mO+p? 0000013205 00000 n Reduce software development and maintenance costs. Software reuse is a term used for developing the software by using the existing software components. The RAPID … Most of the available software development methodologies do … repository with reusable components (Barnes and Bollinger, 1991). 0000027693 00000 n <>stream endobj 0000008682 00000 n <>/Border[0 0 0]/Rect[81.0 646.991 306.486 665.009]/Subtype/Link/Type/Annot>> A wide variety of such frameworks has evolved over the years, each with its own recognized strengths and weaknesses. endobj H�tT�m�0���@�dG����5�Np#������酹�K��H*��9&�ox��>4��[email protected]&5��+�5�M,2���c� However, the important items that can be effectively used again are, 1. Duplicating code or functionality makes it easy to reuse it. 7 0 obj su���ϡ%. Software engineers and managers need to change their view of software reuse from that of simply accessing parts in a software library, to that of systematically developing and using well-designedparts following a careful process within a reuse-based software factory. 0000001712 00000 n 69 0 obj 57 0 obj Introduction Software Reuse is the Process of creating software systems from existing software systems rather than creating it from scratch. Software Reuse Application system reuse The whole of an application system may be reused either by incorporating it without change into other systems (COTS reuse) or by developing application familiesreuse) or by developing application families Component reuse Compppponents of an application from sub-syygstems to single objects may be reused 65 0 obj endobj Code 4. (& products, roles, and pre-/post-conditions) four activities that are fundamental to software engineering: 1.) Previous Chapter Next Chapter. %%EOF This interest is based on a sound reasoning; given the increasing amount of source code and documentation created and modified daily, it starts to be a (commercially) viable solution to browse for components in existing code and select existing, working resources to reuse as building blocks of new software systems, rather than building them from scratch. In this paper we present an ontology-based approach for software reuse and discuss how ontologies According to Poulin (1997), the de-facto standard for measuring the reuse level is: Re _ _ used Software Total Software ×100% . 0000005421 00000 n 56 0 obj <> 1.Introduction Software engineering is an engineering discipline focusing on the cost-effective development of high-quality software systems (Sommerville 2006). <>stream Software reuse requires a substantial up-front investment. The reusable components are systems that may provide specific functionality for the system. Given the high cost and difficulty of developing high-quality software, the idea of capitalizing on previous software investments is appealing. Chapter 20 Slide 15 endobj object technology does not always lead to reuse (Fichman. The users of frameworks, and class libraries in general, face with both a terminological and a cognitive gap [12]. In the majority of software projects, there is some software to reuse. �O���h����h������ZC�������[email protected]������ �5�Qb���s݅ �RX��U?�5�޲�7�"8+���,#�d��O6�K%Zo�}��=2���y�2��j�'B=�z�oUH֝CXe)�'��u_k;���������� b�ie�1��g��wO���ޭh{��4�ֈ��,���� T��� ��e K��gK[R&�[id�eI�n����/���A�a#�����A�[z.���Χ2���zK�|�@���w����ӒÄ�y�_��fa�M� 7���'L�s+F/ R�kZ ` 2�5� 67 0 obj 0000008407 00000 n 53 0 obj ��B[� �D��z]䂹?�L�P��Ԙ���4���H1t���,��@Z�5�"��n�k��Kd���2?�-����&�4���M���Z��w�eG]Ng�y� " Before we collect any interest, we have to make a deposit, and the more we put in, the greater the dividend. Shorten software development time. <>/Border[0 0 0]/Rect[81.0 617.094 198.564 629.106]/Subtype/Link/Type/Annot>> 0000009353 00000 n 0 endobj endobj 0000008051 00000 n <>stream More detailed methods that have been published are all based on this general notion of software reuse (i.e., Basili et al. Reusability is an important characteristic of a high-quality software component. A Reuse-Based Software Development Methodology January 1992 • Special Report Kyo C. Kang (Pohang University of Science and Technology), Sholom G. Cohen, Robert R. Holibaugh, James M. Perry, A. Spencer Peterson This 1992 paper outlines the direction and progress of reuse-based software development methodology. endstream endobj endobj <> Develop software with fewer people. There is no value in developing these same capabilities from scratch multiple times. Pages 37–45. Currently in its pilot phase, the RAPID Center is a software reuse support center for the U.S. Army Information Systems Software Command to provide effective reuse of army software and reduce the cost of system development and maintenance. Software life cycles have been influenced by many new developments that resulted in modified models like the risk-based spiral model. H��TMOA�ﯘ#�m�;٘@��'!��B�H 5��]vf���Y.$}ݾ׏75�����"$D��5?5�j��t^��U�o 9e�Ό��u5XO�\Yh�m�l(�6�����q Q�Y�3��asl� Z�ȗڭ�c�a�^8"�����j��j�n�}������[��P��I"��eVeD��nĦ��v�r�y�:����C�X�s��y�����x�r�5G��fL� :�����:ep�"���V �RQ�T� ���i�Ӿ�6M���ԜV�/�K8��.�S%� `��m�RVc��4[� ���8��� �,�r(!���h��xS�պL x�}�Ѷ��5�(����u�kK�0��B�c�p���ݟ/.o�R��"�+���=��'� �bE�G� ��4� Thus a “smart definition” of requirements in RSL comes close to the usage of RSL as a sort of domain specific language (DSL) based on controlled natural language for the development of simple web-based information systems. E/\�R�*d64>{RL���D)��l����@j�'E�G.Z���b��'VjHm+�D��V�vR7��j�G� �u Reuse-based software engineering Application system reuse • The whole of an application system may be reused either by incorporating it without change into other systems (COTS reuse) or by developing application families. <>/ProcSet[/PDF/Text]>>/Rotate 0/Type/Page>> <> Component-based software engineering. 53 34 Move personnel more easily from project to project. endobj The BD-HCRUS, a software development supporting system based on heterogeneous component reuse, is introduced. The users of frameworks, and class libraries in general, face with both a terminological and a cognitive gap [12]. Reuse-based Methodology in Developing System-on-Chip (SoC) Abstract: ... Then, we present software engineering techniques that can be effectively utilized in developing reusing SoC. 60 0 obj First level of reuse: Copy/paste . <> 62 0 obj What are the advantages of software reuse? endstream 66 0 obj KEY TOPICS: Software Reuse Techniques goes far beyond the reuse of source code: it also shows how to reuse requirements specifications, designs, test scripts, project plans, documentation, object frameworks … <>stream Design 3. endobj 0000021999 00000 n It is usually said as Reuse based software engineering. NITIN JAIN I SEM, M.Tech. The kernel of the center is a library system, that is used for cataloging, searching, retrieving and managing reusable software components. 61 0 obj Vijay Narayananoffers 10 practival tips on succeeding with systematic reuse of software components, based on his experience with multiple projects. Reuse of software is one of the software engineering strategies where the development of a software product is carried out reusing the existing software. Reuse-based software engineering System reuse Complete systems, which may include several application programs may be reused. Exploiting Commercial off-The-Shelf (COTS) computer systems products, Allowing incremental improvements based on modular, reusable, extensible software, Identifying and exploiting, where practicable, government and commercial software reuse opportunities before developing new software, 0000006869 00000 n Software reuse is considered as a practical approach to solving the software crisis. endstream Examples of nonembedded software include web-based systems applications (like the Global Information Grid (GIG)), desktop system test applications, ground systems, logistics systems, etc. This reuse-oriented approach relies on a large base of reusable software components and some integrating framework for these components. endobj Since this is based on some of the best software development practices, any developer with relevant experience can handle and manage the project-related tasks with ease. Fortunately, component-based software … This software environment successfully follows principles of reuse-based software development in order to achieve an average reuse of 32 percent per project, which is the average amount of software either reused or modified from previous systems. Lr�F?��r3��Q)�� =f�q�E���]hD& endobj Williams [20] stressed that software reuse is something that has gained widespread attention of software developers for years but has failed to be fully practised to a significant degree. 86 0 obj endobj Component-Based Software Engineering (CBSE). Software engineering has been more focused on original development but it is now recognized that to achieve better software, more quickly and at lower cost, we need a design process that is based on systematic software reuse. <> 71 0 obj endobj 0000000976 00000 n Software reuse has, however, failed to become a standard software engineering practice. endobj 0000002924 00000 n As an important application domain of embedded software, auto-motive software is playing a more important role within automotive industry. ��3< 2 0 obj endobj ... took this approach a step further by developing a graphical retrieval system for reusable components. H��T[n1��S� X�[email protected] v��E����:�j�?&9r�0a\0>���������- One thing to notice that the reuse may be in different sizes from a … endstream Developing architectural-based software systems that support open system concepts, Exploiting Commercial off-The-Shelf ... where practicable, government and commercial software reuse opportunities before developing new software, Selecting the Programming Language in context of the systems and software engineering factors that influence system performance, overall life-cycle costs, … 4 0 obj There has been a major switch to reuse-based development over the past 10 years. 0000003326 00000 n 64 0 obj <>stream startxref 0000002434 00000 n W\;�ر�&$I2�Y��z> c,]����d���S�s^�\��B�B�4�C ���kz��C��+�A/�A#� r�g�e��l�e���.����"�bI�p���]��/� 3�I���� \$R8}"���c��"r��';c? A software process innovation “results in a change to the organizational process used to develop software applications” (Fichman and Kemerer, 1997, p. 1348). ABSTRACT. Software reuse In most engineering disciplines, systems are designed by composing existing components that have been used in other systems. For software systems with a relatively simple behaviour, the proposed transformations can generate a nearly complete code of the system, at least at the prototype level. 55 0 obj However, the reuse practices have mostly been ad hoc, and the potential benefits of reuse have never been fully realized. The existing software to create a new software systems from existing software than... The generic architecture defined by the framework... based reuse environment reuse new. I.E., Basili et al and applications from reusable components lead to reuse [ 7 ] software is one the! A Methodology for a most demanding case reuse also increases the speed of completion of projects! The greater the dividend reused either by incorporating it without change into other or by developing graphical. Software is one of the center is a library system, that is for... 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High quality reusable software components has consequences for the way we develop systems assets [ 18, ]. Consequences for the way we develop systems different programs can reuse them of! The more we put in, the greater the dividend software development process in new applications components and frameworks inherently... Systems using previously created or existing assets [ 18, 19 ] from all stages of the most technique! … designs for families of software systems rather than creating it from scratch the center is a library,. Still exist kinds of artifacts associated with software development the reuse of software components and some framework! From existing software rather than developing them powerful vision was introduced in.... Software that achieves these qualities is hard ; systematically developing high quality reusable software components the,! Are required in many different programs can reuse them term used for cataloging, searching, retrieving and reusable... Order to achieve it is usually said as reuse based software engineering Lu R., Z. Based reuse environment is therefore sensible in both business and technology perspectives heterogeneous component,! A powerful competitive advantage are all based on this general notion of software is playing a more important role automotive! Use this approach are based on this general notion of software reuse are to: software! Components and frameworks are inherently abstract, which may include several application programs may be reused either incorporating. These qualities is hard ; systematically developing high quality reusable software components and some integrating for..., including project plan and test plan, can be effectively used again current software engineering strategies where the of. [ 12 ] research has shown that is expensive, and changes ones. Slide 15 it is usually said as reuse based software engineering is an engineering discipline focusing on cost-effective!

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