Multiple choice technology web technology

Which of the following is the best term used for expressing the relationship between two tables-based on joins?

  1. Cardinality

  2. Optionality

  3. Many-to-one relationship

  4. Self join
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A Correct answer
Explanation

Cardinality is the standard database term expressing how rows in two tables relate through a join (one-to-one, one-to-many, many-to-many). Optionality refers to nullability, many-to-one is a specific cardinality type, and self-join is a join technique - not the general term.

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