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Questions and Answers
Which of the following is a condition that a foreign key must satisfy?
Which of the following is a condition that a foreign key must satisfy?
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Which category of constraints are difficult to express within the data model and are expressed and enforced by the application programs?
Which category of constraints are difficult to express within the data model and are expressed and enforced by the application programs?
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Which condition must a key satisfy?
Which condition must a key satisfy?
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What is a candidate key in a relation schema?
What is a candidate key in a relation schema?
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What does the referential integrity constraint state?
What does the referential integrity constraint state?
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What are constraints in a relational database?
What are constraints in a relational database?
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What are the three categories of constraints in a relational database?
What are the three categories of constraints in a relational database?
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What is a domain constraint?
What is a domain constraint?
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What is a key constraint?
What is a key constraint?
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What is a foreign key?
What is a foreign key?
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What are the conditions that a foreign key must satisfy?
What are the conditions that a foreign key must satisfy?
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What are super keys in a relation schema?
What are super keys in a relation schema?
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What are the conditions that a key should satisfy in a relation schema?
What are the conditions that a key should satisfy in a relation schema?
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What is a candidate key in a relation schema?
What is a candidate key in a relation schema?
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What is the referential integrity constraint?
What is the referential integrity constraint?
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