The functional data model and the data languages DAPLEX
ACM Transactions on Database Systems (TODS)
Application Program Conversion due to Data Base Changes
Systems for Large Data Bases
An Approach to Data Communication between Different Generalized Data Base Management Systems
Systems for Large Data Bases
Statistical Databases: Characteristics, Problems, and some Solutions
VLDB '82 Proceedings of the 8th International Conference on Very Large Data Bases
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Numerous economists, analysts and bureaucrats now devote a large part of their time working with statistical summary data. Such data is produced from cross-tabulation or multi-level aggregation of unit-record or individual case data. When receiving summary ...