一种基于UML用例模型的软件可靠性分配方法

Method of Software Reliability Allocation Based on UML Use Case Model

基于统一建模语言(UML)用例模型描述软件系统需求方面的特点;提出了以UML用例图中所包含的各个用例的使用频率作为衡量该用例的重要程度的依据,从而确定每个用例的重要度的权重因子。根据每个用例的权重因子来确定每个用例该承担的可靠性指标任务,实现软件可靠性指标在各个用例之间进行合理的分配。这种分配方案对保证软件系统的可靠性目标具有重大的现实意义,为软件后续开发、测试、维护提供可以参考的依据。

We introduced a methodology that starts with the analysis of the UML use case diagram for software reliabilityallocation with the probability of executing each use cases.We will utilize the probability of executing each use cases to measure the importance of the use case,then to determine weight factor of each use case.According to the weight factor of each use case to determine the reliability index undertaken by each use case,system architect can reasonable assign reliability index of system to each use case.This methodology based on use case can ensure the target of software reliability and provide reference for follow-up development and software test.