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Figure 6.1 Schematic view of query processing. Figure 6.2A Examples of set operators. Figure 6.2B (continued) Examples of set operators. Figure 6.2C (continued) Examples of set operators. Figure 6.3 Two relations and their Cartesian product.
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Figure 6.3B (continued)Two relations and their Cartesian product.
Figure 6.6Anatomy of a Query: Courses taught by every computer science professor.
Figure 6.11SQL’s truth tables used to deal with the unknown.