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Chapter 6

Chapter 6. The Relational Algebra and Relational Calculus. Unary Relational Operations: SELECT and PROJECT. The SELECT Operation The PROJECT Operation Sequences of Operations and the RENAME Operation. Relational Algebra Operations from Set Theory.

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Chapter 6

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  1. Chapter 6 The Relational Algebra and Relational Calculus

  2. Unary Relational Operations: SELECT and PROJECT • The SELECT Operation • The PROJECT Operation • Sequences of Operations and the RENAME Operation

  3. Relational Algebra Operations from Set Theory • The UNION, INTERSECTION, and MINUS Operations • The CARTESIAN PRODUCT (or CROSS PRODUCT) Operation

  4. Binary Relational Operations: JOIN and DIVISION • The JOIN Operation • The EQUIJOIN and NATURAL JOIN Variations of JOIN • A Complete Set of Relational Algebra Operations • The DIVISION Operation

  5. Additional Relational Operations • Aggregate Functions and Grouping • Recursive Closure Operations • OUTER JOIN Operations • The OUTER JOIN Operation

  6. Examples of Queries in Relational Algebra

  7. The Tuple Relational Calculus • Tuple Variables and Range Relations • Expressions and Formulas in Tuple Relational Calculus • The Existential and Universal Quantifiers • Example Queries Using the Existential Quantifier • Transforming the Universal and Existential Quantifiers • Using the Universal Quantifier • Safe Expressions

  8. The Domain Relational Calculus

  9. Summary

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