Slide 1 1 Class Agenda (04/03 and 04/08)  Review and discuss HW #8 answers  Present normalization process Enhance conceptual knowledge of database design. Improve practical…

Slide 1Functional Dependencies R&G Chapter 19 Science is the knowledge of consequences, and dependence of one fact upon another. Thomas Hobbes (1588-1679 ) Slide 2 Review:…

Slide 1 Midterm Review II Slide 2 Redundancy. –Information may be repeated unnecessarily in several tuples. –E.g. length and filmType. Update anomalies. –We may change…

Slide 1 Chapter 8 Normal Forms Based on Functional Dependencies Deborah Costa Oct 18, 2007 Slide 2 8.1 Normalization Data redundancy and the consequent modification (insertion,…

Slide 1 Database Design and Maintenance Slide 2 Review Proper database design ensures that the data is represented properly, tables are joined correctly, and that data can…

Slide 1 COMP 5138 Relational Database Management Systems Semester 2, 2007 Lecture 4 Normalization Slide 2 22 L12 Normalization Motivation Making it precise: Functional Dependency…

Slide 1 Relational Design Slide 2 DatabaseDesign Process Conceptual Modeling -- ER diagrams ER schema transformed to relational schema Designer may add additional integrity…

Slide 1 Database Management Systems, R. Ramakrishnan and J. Gehrke1 Schema Refinement and Normal Forms Chapter 19 Slide 2 Database Management Systems, R. Ramakrishnan and…

Slide 1 Schema Refinement and Normal Forms Slide 2 The Evils of Redundancy v Redundancy is at the root of several problems associated with relational schemas: – redundant…

Slide 1 1 Schema Refinement and Normal Forms Yanlei Diao UMass Amherst April 10, 2007 Slides Courtesy of R. Ramakrishnan and J. Gehrke Slide 2 2 The Evils of Redundancy …