EXAMIANS
For every relationship, there are six possible referential integrity actions.
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Which is not true about surrogate keys?
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A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n):
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When the parent entity is required, cascading updates and cascading deletions should be allowed or the associated actions on the parent should be prohibited.
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Which of the following situation requires the use of ID-dependent entities?
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Each entity is represented as a(n):
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The DBMS allows surrogate keys to be changed.
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A foreign key is used to implement relationships between tables.
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When transforming an entity-relationship model into a relational database design, each entity is represented as a table.
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Surrogate keys have much meaning for users.
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