Database Debunkings - Analysis of various systems and ideas floating in the database scene, against the standards set by the relational model for database management. FirstSQL Issue Papers - Opinions fundamented on the relational model about NULLs, SQL and DBMS Introduction to Relational Databases - Concentrating on the 12 Rules from EF Codd and a succinct, informal definition of normalisation with examples. Fondation Matters - Series of relational database model articles by Chris J Date, with emphasis on rules applications. Registration required. Against the Grain - Contrarian articles by Fabian Pascal about the necessity of getting the relational model properly implemented. The Third Manifesto - Additional material related to the book. Twelve Rules for Business Rules - Paper by C.J. Date on business rules as data integrity constraints. A Relational Model of Data for Large Shared Data Banks - The paper that started it all. The first public statement of the Relational Model. Alternative Technologies - Several publications on relational data. Free registration required. A Simple Guide to Five Normal Forms in Relational Database Theory - By William Kent, as originally published internally at IBM in 198l, and the Communications of the ACM in 1983. 12 Rules - 12 Rules for a relational database by EF Codd. An Introduction to Database Normalization - Article by Mike Hillyer. A practical look at database normalization, focusing on the first three of seven generally recognized normal forms. Date’s 12 Rules for DDB's - C.J. Date's goals for distributed relational databases. Orthogonal to the relational model. Extending the Database Relational Model to Capture More Meaning - RM/T: semantics modeling in the relational model for database management.