A Computer System for Inference Execution and Data Retrieval This paper presents a RAND project concerned with the use of computers as assistants in the logical analysis of large collections of factual data. A system called Relational Data File was developed for this purpose. The Relational Data File is briefly detailed and problems arising from its implementation are discussed. CACM November, 1967 Levien, R. E. CA671105 JB February 26, 1978 3:02 PM 1155 4 1515 1456 4 1515 1468 4 1515 1515 4 1515 1515 4 1515 1699 4 1515 1856 4 1515 2096 4 1515 2127 4 1515 2127 4 1515 2210 4 1515 1155 5 1515 1324 5 1515 1515 5 1515 1515 5 1515 1515 5 1515 2046 5 1515 2710 5 1515 1515 6 1515 1515 6 1515 2046 6 1515 2715 6 1515 616 6 1515