1. Introduction -- 1.1. Brief History of Database Technology -- 1.2. The Relational Approach -- 1.3. Data-Intensive Application Domains -- 1.4. Requirements of New Data-Intensive Applications -- 2. Overview Of Recent Evolution In Database Technology -- 2.1. Semantic Data Models -- 2.2. Functional Data Models -- 2.3. Temporal Databases -- 2.4. Extended Relational Databases -- 2.5. Deductive Databases -- 2.6. Object-Oriented Databases -- 2.7. Active Databases -- 3. Theory Of The Nested Relational Model -- 3.1. The Relational Data Model -- 3.2. Relational Algebra -- 3.3. Relational Calculus -- 3.4. Nested Relational Data Model -- 3.5. Extended Relational Algebra -- 3.6. Equivalence of Extended Relational Algebra Expressions -- 3.7. Extended Relational Calculus -- 3.8. Expressive Power: Comparing Algebra and Calculus -- 3.9. Taxonomy of Nested Relations -- 3.10. Further Extensions to the Nested Relational Model -- 4. Algres, An Extended Relational Database Programming Language -- 4.1. A Tour of Aigres -- 4.2. Rationale of Aigres Design -- 5. Programming In Algres -- 5.1. Constants, Identifiers, and Objects -- 5.2. Groups and Persistency -- 5.3. Operations -- 5.4. The Quantification Mechanism -- 5.5. Input-Output -- 5.6. Control structures and blocks -- 5.7. Subprograms -- 5.8. Links -- 5.9. Built in functions -- 5.10. Program Structure -- 6. Alice, The Application Program Interface Of Algres -- 6.1. A Tour of Alice -- 6.2. Guidelines for Writing Alice Programs -- 6.3. Programming in Alice -- 7. Algraph, The Graphical Interface Of Algres -- 7.1. Graphical Display -- 7.2. Graphical Read -- 7.3. Motif Interface for Input-Output -- 7.4. Schema Editor -- Appendix A: Syntax Of Algres -- Appendix B: Syntax Of Alice Operators -- Appendix C: Algres And Alice Keywords -- Appendix D: Installing And Using The Algres System -- Getting a Free Copy of the Aigres System -- Installing Aigres -- Using Aigres Commands -- Compiling and Executing Aigres Programs -- Compiling and Executing Alice Applications -- Editing Aigres Objects