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Lecture Enterprise systems development - Lecture 22

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This chapter define a list and a list definition table within the context of spreadsheet software and describe the importance of each, compare and contrast the Filter function and Custom Filter function in spreadsheet software, describe the purpose of using conditional formatting. | Lecture 22 Enterprise Systems Development ( CSC447) COMSATS Islamabad Muhammad Usman, Assistant Professor College of Statistical and Acturial Science 1 Reusable components The development cost of reusable components may be higher than the cost of specific equivalents. This extra reusability enhancement cost should be an organization rather than a project cost. Generic components may be less space-efficient and may have longer execution times than their specific equivalents. 2 Component management Component management involves deciding how to classify the component so that it can be discovered, making the component available either in a repository or as a service, maintaining information about the use of the component and keeping track of different component versions. A company with a reuse program may carry out some form of component certification before the component is made available for reuse. Certification means that someone apart from the developer checks the quality of the component. 3 CBSE with reuse CBSE with reuse process has to find and integrate reusable components. When reusing components, it is essential to make trade-offs between ideal requirements and the services actually provided by available components. This involves: Developing outline requirements; Searching for components then modifying requirements according to available functionality. Searching again to find if there are better components that meet the revised requirements. Composing components to create the system. 4 CBSE with reuse 5 The component identification process 6 Component identification issues Trust. You need to be able to trust the supplier of a component. At best, an untrusted component may not operate as advertised; at worst, it can breach your security. Requirements. Different groups of components will satisfy different requirements. Validation. The component specification may not be detailed enough to allow comprehensive tests to be developed. Components may have unwanted . | Lecture 22 Enterprise Systems Development ( CSC447) COMSATS Islamabad Muhammad Usman, Assistant Professor College of Statistical and Acturial Science 1 Reusable components The development cost of reusable components may be higher than the cost of specific equivalents. This extra reusability enhancement cost should be an organization rather than a project cost. Generic components may be less space-efficient and may have longer execution times than their specific equivalents. 2 Component management Component management involves deciding how to classify the component so that it can be discovered, making the component available either in a repository or as a service, maintaining information about the use of the component and keeping track of different component versions. A company with a reuse program may carry out some form of component certification before the component is made available for reuse. Certification means that someone apart from the developer checks the quality of the .

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