The term "Join Selection Factor" (JSF) typically refers to a metric used in database query optimization, particularly in the context of relational databases. Although "Join Selection Factor" may not always be explicitly defined in literature, it generally relates to how selective a join operation will be when combining two or more tables. ### Explanation of Join Selection Factor: 1. **Definition**: - The Join Selection Factor quantifies the effectiveness of a join condition in filtering rows from the involved tables.
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