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Database Systems: Concepts, Design and Applications by S. K. Singh

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Fill in the Blanks

1.The relationship between a superclass and a subclasses is ________.
2.The U-shaped symbols in EER model indicates that the ________ is a ________ of the ________.
3.Attribute inheritance is the property by which ________ entities inherit values of all attributes of the ________.
4.The E-R model that is supported with the additional semantic concepts is called the ________.
5.Attribute inheritance avoids ________.
6.A subtype with more that one supertype is called a ________.
7.A total participation specifies that every member in the ________ must participate as a member of some ________ subclass in the ________.
8.A partial participation constraint specifies that a member of a ________ need not belong to any of its ________ ...

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