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

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Fill in the Blanks

1.E-R model was introduced by ________ in ________.
2.An entity is an ________ or ________ in the real word.
3.A relationship is an ________ among two or more ________ that is of interest to the enterprise.
4.A particular occurrence of a relationship is called a ________.
5.The database model uses the (a) ________, (b) ________ and (c) ________ to construct representation of the real world system.
6.The relationship is joined by ________ to the entities that participate in the relationship.
7.An association among three entities is called ________.
8.A relationship between the instances of a single entity type is called ________.
9.The association between the two entities is called ________.
10.The actual count of elements ...

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