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Relationships in a database model

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There are many kinds of entity relationships in a database model. The relationships can be classified by the following things.

Cardinality: maximum and minimum
Degree: binary, ternary, degree 4, and so forth
Entity type: strong, weak, ID-dependent, and supertype/subtype

Discuss different types of classifications and do they overlap, or do they each tell us something unique about the entity relationship? Why is it important to classify each of these types in an ERD (entity relationship diagram) model?

 

Reference no: EM1380235

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