The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
Database abstractions: aggregation and generalization
ACM Transactions on Database Systems (TODS)
An algebra of quotient relations
SIGMOD '77 Proceedings of the 1977 ACM SIGMOD international conference on Management of data
A Data Type Approach to the Entity-Relationship Approach
Proceedings of the 1st International Conference on the Entity-Relationship Approach to Systems Analysis and Design
The design of data type specifications
ICSE '76 Proceedings of the 2nd international conference on Software engineering
A framework for data base semantic integrity
ICSE '76 Proceedings of the 2nd international conference on Software engineering
Problem-Solving Methods in Artificial Intelligence
Problem-Solving Methods in Artificial Intelligence
A faceted taxonomy of semantic integrity constraints for the XML data model
DEXA'07 Proceedings of the 18th international conference on Database and Expert Systems Applications
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The main goal of our efforts is the specification of data bases whose structure and behaviour are restricted by semantic integrity constraints. Research proceeds along the following stages: 1. Choose a data model; 2. Establish a taxonomy of integrity constraints; 3. Specify the data model formally; 4. Develop a methodology for specifying conceptual schemas for different applications, based on the data model; 5. Provide a conceptual characterization of query and update operations.