Optimizing the performance of a relational algebra database interface
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
SIGMOD '75 Proceedings of the 1975 ACM SIGMOD international conference on Management of data
An algebra of relations for machine computation
POPL '75 Proceedings of the 2nd ACM SIGACT-SIGPLAN symposium on Principles of programming languages
SEQUEL: A structured English query language
SIGFIDET '74 Proceedings of the 1974 ACM SIGFIDET (now SIGMOD) workshop on Data description, access and control
PODS '83 Proceedings of the 2nd ACM SIGACT-SIGMOD symposium on Principles of database systems
Aldat: A retrospective on a work in progress
Information Systems
Query language feature analysis by usability
Computer Languages
An overview of recent data base research
ACM SIGMIS Database
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A high-level data-base system, the Peterlee Relational Test Vehicle (PRTV), provides flexible, interactive data-base support and functional extensibility. The user sees the system primarily through a programming language called ISBL, which is designed for manipulating bulk data held in relations. PRTV is not a fullfledged data-base system, but rather an evolving prototype which is expected to aid in solving some of the problems that have been encountered in using relational data bases. PRTV embodies research both in data-base language design and in efficient implementation techniques.