TAILIEUCHUNG - Database System: Chapter 7 - Functional Dependencies

Database System: Chapter 7 - Functional Dependencies includes Informal Design Guidelines for Relational Databases (Semantics of the Relation Attributes, Redundant Information in Tuples and Update Anomalies, Null Values in Tuples, Spurious Tuples), Functional Dependencies (FDs). | Chapter 7 Functional Dependencies Copyright © 2004 Pearson Education, Inc. 5/14/2020 4:10:15 AM Outline Informal Design Guidelines for Relational Databases Semantics of the Relation Attributes Redundant Information in Tuples and Update Anomalies Null Values in Tuples Spurious Tuples Functional Dependencies (FDs) Definition of FD Inference Rules for FDs Equivalence of Sets of FDs Minimal Sets of FDs Slide 7 - Informal Design Guidelines for Relational Databases (1) What is relational database design? The grouping of attributes to form "good" relation schemas Two levels of relation schemas The logical "user view" level The storage "base relation" level Design is concerned mainly with base relations What are the criteria for "good" base relations? Slide 7 - Informal Design Guidelines for Relational Databases (2) We first discuss informal guidelines for good relational design Then we discuss formal concepts of functional dependencies and normal forms - 1NF (First Normal .

• Cơ sở dữ liệu
• Database System
• Functional Dependencies
• Informal Design Guidelines for Relational Databases
• Semantics of the Relation Attributes
• Null Values in Tuples
• Spurious Tuples
• Database system concepts
• Lecture Database system concepts
• Database systems
• Database languages
• Database design
• Database system architectures
• Relational database design
• Lecture Database System
• Database system architecture
• File based approach
• Data management systems framework
• Recovery system
• Lecture Database systems
• Database architecture
• Database approach
• Relational databases
• Database design process
• Query optimization
• Transaction state
• Concurrency control
• Data analysis
• Information retrieval
• Parallel databases
• Distributed databases
• Advanced application development
• Advanced data types
• Advanced transaction processing
• Relational model
• Basic query structure
• Dynamic SQL
• Tuple relational calculus
• Entity relationship model
• Application design
• Object­ based databases