Statistical Data Management
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A Statistical data management system is a data management system designed to explicitly handle so called “macro data,” i.e., data computed by different forms of summarization, including grouping and classification, as first class objects. In a statistical data management system, there are data manipulation operators that “slice and dice” the macro data. In many statistical databases, one of the goals is to hide the micro data (i.e., the raw data records from which the macro data are computed) from user queries.
A classical example of a statistical database is a database created for social or economic surveys. STORM  is a classical statistical data management system.
Research on statistical databases started in the 1970s and flourished in the 1980s, predating OLAP. A number of systems developed based on both relational and object-oriented data models. Many of these systems developed a graph-based representation of...
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