在充分研究SSE CMM模型的基础上，采用系统工程的思想，建立了以风险分析为中心的信息系统安全生命期模型。
Then, after SSE-CMM is explained, a risk-analysis-centric model of information system security engineering is established using system engineering theory.
根据企业询单处理的业务过程特点，进行基于业务过程的询单处理信息系统安全需求分析，在此基础上，为制造企业询单处理信息系统建立了有应用价值的安全解决方案。
The security requirement based on the business process characteristic of order processing is analysed in the thesis, and a security solution that has application values for the system is designed.
根据企业询单处理的业务过程特点，进行基于业务过程的询单处理信息系统安全需求分析，在此基础上，为制造企业询单处理信息系统建立了有应用价值的安全解决方案。
The security requirement based on the business process characteristic of order processing is analysed in the thesis, and a security solution that has application values for the system is designed.
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