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Relational Design Motivation Student(StudentID, StudentName, CourseID, CourseName, Grade) Design “anomalies” Redundancy: StudentID => StudentName (cap 阅读全文
posted @ 2018-03-07 21:04
Charonnnnn
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ER Explain the difference between an entity and a relationship ● An entity is an object or concept about which you want to store information. ● Relati 阅读全文
posted @ 2018-03-07 19:13
Charonnnnn
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