Background for Advances in Data Base Theory.- Data Base Design.- On the Properties of Join Dependencies.- Decomposition of Relations: A Comprehensive Approach.- Adequacy of Decompositions of Relational Databases.- A Method for Helping Discover the Dependencies of a Relation.- General Laws: Deduction and Integrity.- On the Integrity of Typed First Order Data Bases.- Equations Compared with Clauses for Specification of Abstract Data Types.- Optimization in Deductive and Conventional Relational Database Systems.- On Evaluation of Queries Containing Derived Relations in a Relational Data Base.- Reasoning with Data in a Deductively Augmented Data Management System.- Informative Capabilities for Users.- A Formal Approach to Null Values in Database Relations.- About Natural Logic.- Assigning Meaning to Ill-Defined Queries Expressed in Predicate Calculus Language.- On the Feasibility of Informative Answers.- Name Index.- List of Referees.- Addresses of Contributing Authors.Springer Book Archives