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icarnegieSSD7数据库课程选择题 1. An E-Commerce database contains data about customers, products, orders, system response times, etc. Which of the following can be specified as integrity constraints in an E-Commerce database system? No two products can have the same product ID. The DBMS response time for all Web requests should be at most 2 seconds. A customer order cannot have more than one shipping address.
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