Answering English questions by computer: a survey
Communications of the ACM
An information algebra: phase 1 report—language structure group of the CODASYL development committee
Communications of the ACM
An overview of nonprocedural languages
Proceedings of the ACM SIGPLAN symposium on Very high level languages
Hierarchical performance analysis models for data base systems
VLDB '75 Proceedings of the 1st International Conference on Very Large Data Bases
An analytical model for information processing systems
AFIPS '74 Proceedings of the May 6-10, 1974, national computer conference and exposition
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This paper intends to clarify logical and physical information structures and essential operations in the data processing on them. Basic terminologies are due to Information Algebra originally proposed by CODASYL Language Structure Group in 1961, however, several new concepts have been introduced to ease the discussion from the software implementation point of view. The paper is included in internal research memorandom titled “Data Base Management Systems - a Theory and a Practice,” RM-008 of Nippon Univac Sogo Kenkyusho, Inc., in which the proposal for constructing generalized data base management system and description of an experimental system FORIMS are also given.