Module 13 (Introduction to SQL - Part 2).pdf
Module 13 (Introduction to SQL - Part 2).pdf
Module 13 (Introduction to SQL - Part 2).pdf
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The JOIN ClauseThe JOIN clause is the means by whichtwo (or more) tables (or queries) can becombined and treated as a unit.Joins are how the power of the relationaldatabase model is expressed. By usingthem you exploit the interrelationshipsamong sets of items (the tables) and theitems themselves (the records).