Chapter10

 
Chapter 10 Functional Dependencies and Normalization for Relational Databases
Chapter Outline ,[object Object],[object Object],[object Object]
Informal Design Guidelines for Relational Databases (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Informal Design Guidelines for Relational Databases (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Semantics of the Relation Attributes  ,[object Object],[object Object],[object Object],[object Object],[object Object]
A simplified COMPANY relational database schema
Redundant Information in Tuples and Update Anomalies  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Two relation schemas suffering from storage wastage and update anomalies
Example States for EMP_DEPT and EMP_PROJ
EXAMPLE OF AN UPDATE ANOMALY ,[object Object],[object Object],[object Object],[object Object]
EXAMPLE OF AN INSERT ANOMALY ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
EXAMPLE OF AN DELETE ANOMALY ,[object Object],[object Object],[object Object],[object Object],[object Object]
Guideline to Redundant Information in Tuples and Update Anomalies ,[object Object],[object Object],[object Object]
Null Values in Tuples  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Spurious Tuples  ,[object Object],[object Object],[object Object],[object Object]
 
 
Functional Dependencies (1)  ,[object Object],[object Object],[object Object],[object Object]
Functional Dependencies (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Examples of FD constraints  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inference Rules for FDs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Normalization of Relations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Definitions of Keys and Attributes  Participating in Keys (1) ,[object Object],[object Object]
Definitions of Keys and Attributes  Participating in Keys (2) ,[object Object],[object Object],[object Object],[object Object]
First Normal Form  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Normalization into 1NF
Normalization of nested relations into 1NF
Second Normal Form (1)  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Second Normal Form (2) ,[object Object],[object Object]
Normalizing into 2NF
Third Normal Form (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Third Normal Form (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Normalizing into 3NF
Normal Forms Defined Informally ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
General Normal Form Definitions (1) ,[object Object],[object Object],[object Object]
General Normal Form Definitions (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Normalization into General 2NF and 3NF
BCNF (Boyce-Codd Normal Form)  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Boyce-Codd normal form
A relation TEACH that is in 3NF but not in BCNF ,[object Object],[object Object]
Achieving the BCNF by Decomposition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
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Chapter10