您所在位置：主题：江湖求急啊,看看以下几个是啥范式啊?
空明七心
[专家分：0] 发布于 2006-05-12 18:01:00
江湖救急啊,看看以下几个是啥范式啊?如何改至BCNF?
Person (Id, TFN, Name, Phone)
PolicyOwner (PersonId, PolicyNumber, TFN, Start-Date)
InsurancePolicy (PolicyNumber, AgentNumber, PremiumAmount, CoverageAmount)
Person (Id, TFN, Name, Phone)
PolicyOwner (PersonId, PolicyNumber, TFN, Start-Date)
InsurancePolicy (PolicyNumber, AgentNumber, PremiumAmount, CoverageAmount)
