Non-repudiation: any access to customer data is logged, while retaining the main benefits of a public storage service.
不可否认性：任何对客户数据的访问都会被记录，同时还保留了公有存储服务的主要优势。
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Tag #1: Is this customer at high risk of canceling the company's service? (Or becoming a non-user)
第一个标签：这个顾客很有可能取消公司的服务吗？
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A portal project is no different than any other software project in that you need to define functional requirements, non-functional requirements, and any design constraints imposed by the customer.