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What is a relation in the context of a relational model?
What is a relation in the context of a relational model?
- A named column of a relation
- A set of allowable values for an attribute
- A collection of normalized relations with distinct relation names
- A table with columns and rows (correct)
What does cardinality refer to in the relational model?
What does cardinality refer to in the relational model?
- The number of tuples in a relation (correct)
- A collection of normalized relations with distinct relation names
- The set of allowable values for an attribute
- A named column of a relation
What is a relation schema in the relational model?
What is a relation schema in the relational model?
- A table with columns and rows
- A collection of normalized relations with distinct relation names
- A named relation defined by a set of attribute and domain name pairs (correct)
- A set of relation schemas, each with a distinct name
What are the properties of relations in the relational model?
What are the properties of relations in the relational model?
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What does the term 'domain' refer to in the relational model?
What does the term 'domain' refer to in the relational model?
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