Sunday, July 14, 2024

New Paper: UNDERSTANDING THE REAL RDM - E.F. Codd 1969-70 Papers Part 2

 



Table of Contents


 

Introduction
1. Logical Symmetric Access
2. Universal Data Sublanguage
2.1. FOPL vs. SOL
2.2. Relational Completeness
2.3. Computational Completeness and Hosting
3. Kinds of Relations
3.1. Expressible and Named Relations
3.2. Derived Relations
3.3. Data Storage
4. Derived Relations and Redundancy
4.1. Database Consistency
5. Database Catalog
Conclusion





Monday, July 8, 2024

New Paper: UNDERSTANDING THE REAL RDM - E.F.Codd 1969-70 Papers Part 1


 

Table of Contents

Series Preface
Introduction
1. Interpretation of Database Relations
1.1. Attributes as Constrained Domains
1.2. Time-Varying Relations
2. Representation of Database Relations
2.1. Physical Data Independence
2.1.1. Uniquely Named Attributes
2.1.2. Primary Keys
2.1.3. Relations and R-tables
3. Normalization
3.1. First Normal Form and “Simple” Domains
3.2. Normalization and Non-simple Domains
3.2.1. Foreign Keys
Conclusion