... Database Design 133 -- Chapter 4 -- An Introduction to Database Design: The Conceptual Database and Normalization ... ... Determine the Scope of the Design: What Are the Boundaries? 139 -- 4.3 Step 2. ... ... Operator, 238 The JOIN Operator, 240 Natural Joins and Equijoins, 241 The UNION Operator, 244 -- The INTERSECTION ...