6.3: Set Operations
Some relational algebra operations are based on mathematical set operations. Relational calculus statements, which specify a desired result, are interpreted as operations on sets.
Review pages 6-12 to 6-19 and study the examples. These pages discuss relational calculus, which utilizes mathematical set operations. Basic relational algebra set operations are discussed earlier in the chapter, on pages 6-1 to 6-12. Tables for the examples are included at the end of the chapter.