专业英语Unit-5-Section-A-Software-Process.pptVIP

IV. Component-Based Software Engineering This reuse-oriented approach relies on a large base of reusable software components and some integrating framework for these components. Sometimes，these components are systems in their own right (COTS,commercial off-the-shelf)that may provide specific functionality such as text formatting or numeric calculation. The generic process model for CBSE is shown in Figure 5A-3. in their own right： 本身，自身 off-the-shelf： 现成的 CBSE: component-based software engineering 这种面向复用的方法依靠大量的可复用软件组件，以及用于这些组件的某种集成框架。有时，这些组件本身(现成商用的）就是可提供文本格式化或数值计算等特定功能的系统,基于组件的软件工程的类属过程模型如图5A-3所示。 IV. Component-Based Software Engineering While the initial requirements specification stage and the validation stage are comparable with other processes，the intermediate stages in a reuse-oriented process are different. These stages are: 1. Component analysis. Given the requirements specification, a search is made for components to implement that specification. Usually, there is no exact match, and the components that may be used only provide some of the functionality required. Validation： 验证 Comparable： 类似 Specification： 规格 就最初的需求规格说明阶段和验证阶段而言，面向复用过程与其他过程相类似，但它的中间阶段与其他过程不同。这些阶段是： 1. 组件分析。在有需求规格说明的情况下，有哪些信誉好的足球投注网站实现该规格的组件。通常，不存在完全相符的组件。可能被使用的组件只在某种程度上提供所要求的功能。 IV. Component-Based Software Engineering 2. Requirements modification. During this stage, the requirements are analyzed using information about the components that have been discovered. They are then modified to reflect the available components. Where modifications are impossible, the component analysis activity may be re-entered to search for alternative solutions. Modification： 修改 re-enter： 重新进入 Solution： 解决 2、需求修改。在这个阶段，使用已经发现的组件的相关信息分析需求，然后修改需求以反映可用的组件。在无法进行修改的情况下，可能重新进入组件分析活动，以有哪些信誉好的足球投注网站可供选择的解决方案。 IV. Component-Based Software Engineering 3. System design with reuse. During this phase, the framework of the sys