Q: How do you represent a 1:M unary relationship in a
How do you represent a 1:M unary relationship in a relational data model?
See AnswerQ: Martin is encouraged by the progress you have made so far.
Martin is encouraged by the progress you have made so far. As promised, he forwards you an email from one of the key members of his staff, Pat Smith (an artist manager). He also provide you with an e-...
See AnswerQ: Match the following terms to the appropriate definitions: - well
Match the following terms to the appropriate definitions: - well-structured relation - anomaly - functional dependency - determinant - composite key - 1NF - 2NF - 3NF - recursive foreign key - transit...
See AnswerQ: Suggest four steps to represent super/subtype relationships.
Suggest four steps to represent super/subtype relationships.
See AnswerQ: In the context of unary relationships, what is a recursive foreign
In the context of unary relationships, what is a recursive foreign key?
See AnswerQ: What are the properties that a candidate key must satisfy?
What are the properties that a candidate key must satisfy?
See AnswerQ: Under what conditions must a foreign key not be null?
Under what conditions must a foreign key not be null?
See AnswerQ: What is an enterprise key, and why is it important?
What is an enterprise key, and why is it important?
See AnswerQ: Describe the difference between how a 1:M unary relationship and
Describe the difference between how a 1:M unary relationship and an M:N unary relationship are implemented in a relational data model.
See AnswerQ: Why is the natural key preserved whenever a surrogate key is created
Why is the natural key preserved whenever a surrogate key is created?
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