Table of Contents

Introduction to Version 2 of the Relational Model. Structure-Oriented and Data-Oriented Features. Domains as Extended Data Types. The Basic Operators. The Advanced Operators. Naming. Commands of the DBA. Missing Information. Response to Technical Criticisms Regarding Missing Information. Qualifiers. Indicators. Query and Manipulation. Integrity Constraints. User-Defined Integrity Constraints. Catalog. Serious Flaws in SQL. Distributed Database Management. More on Distributed Database Management. Advantages of the Relational Approach. Present Products and Future Improvements. Extending the Relational Model. Fundamental Laws of Database Management. Claimed Alternatives to the Relational Model. Appendices.