Database abstractions: aggregation and generalization
ACM Transactions on Database Systems (TODS)
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Implementation of a structured English query language
Communications of the ACM
A relational model of data for large shared data banks
Communications of the ACM
Implementation of integrity constraints and views by query modification
SIGMOD '75 Proceedings of the 1975 ACM SIGMOD international conference on Management of data
Framework for the development of an experimental mixed-mode message system
SIGIR '84 Proceedings of the 7th annual international ACM SIGIR conference on Research and development in information retrieval
Development of a Multimedia Information System for an Office Environment
VLDB '84 Proceedings of the 10th International Conference on Very Large Data Bases
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