Normalization Constraints: There are 2 types of constraints: 1) Defines the permitted values, the attributes can have. 2) Defines the relationship between the attribute.…

1. FUNCTIONAL DEPENDENCIES 2. Definition • Let R be the relation, and let x and y be the arbitrary subset of the set of attributes of R. Then we say that Y is functionally…

Slide 1Dr. A.I. Cristea http://www.dcs.warwick.ac.uk/~acristea/ CS 319: Theory of Databases: FDs Slide 2 2 … previous Generalities on Databases Slide 3 3 … previous Generalities…

Slide 1Dr. A.I. Cristea http://www.dcs.warwick.ac.uk/~acristea/ CS 319: Theory of Databases: C2 Slide 2 Organisational Office hours 11:00-12:00, Wednesdays 17:00-18:00, Thursdays…

Slide 1Announcements Read 6.1 – 6.3 for Wednesday Project Step 3, due now Homework 5, due Friday 10/22 Project Step 4, due Monday Research paper –List of sources - due…

Slide 1 1 Chapter 6 Relational Normalization Theory Slide 2 2 Limitations of E-R Designs Provides a set of guidelines, does not result in a unique database schema Does not…

Slide 1 Relational Normalization Theory Slide 2 Limitations of E-R Designs Provides a set of guidelines, does not result in a unique database schema Does not provide a way…

Slide 1 1 Multi-valued Dependencies Salman Azhar Multi-valued Dependencies Fourth Normal Form These slides use some figures, definitions, and explanations from Elmasri-Navathe’s…

Slide 1 1 Administrivia  HW3 deadline extended: Tuesday 10/7  Revised upcoming schedule:  Thurs. 10/2: Querying XML  Tues. 10/7: More on XML; beginning of views;…

Slide 1 Schema Normalization, Concluded Zachary G. Ives University of Pennsylvania CIS 550 – Database & Information Systems October 11, 2005 Some slide content courtesy…