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4.3 Relational Calculus 106. 4.3.1 Tuple Relational Calculus 107. 4.3.2 Domain Relational Calculus 111. 4.4 Expressive Power of Algebra and Calculus * 114. 4.5 Points to Review 115. 5 SQL: QUERIES, PROGRAMMING, TRIGGERS 119. 5.1 About the Examples 121. 5.2 The Form of a Basic SQL Query 121. 5.2.1 Examples of Basic SQL Queries 126 ................
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