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5 months ago
How are one-to-one recursive relationships addressed using the relational model?
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Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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5 months ago
One-to-one recursive relationships are addressed just the same as one-to-one non-recursive relationships. The only difference is that both related entity instances are in the same entity class. The key of either instance is placed in the other instance as a foreign key. In the case of a recursive relationship, this means that a new attribute is added to the entity class with a recursive relationship. For each instance, this new attribute will contain the value of the key attribute of the instance that is related.
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5 months ago
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5 months ago
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