ROLAP stands for Relational Online Analytical Processing. ROLAP is an alternative to the MOLAP (Multidimensional OLAP) technology. While both ROLAP and MOLAP analytic tools are designed to allow analysis of data through the use of a multidimensional data model, ROLAP differs significantly in that it does not require the pre-computation and storage...
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http://en.wikipedia.org/wiki/ROLAP
(In topic `Data Warehousing & BI`) ROLAP (Relational OLAP) is one of two prominent architectures for OLAP systems. ROLAP architectures access data directly from a data warehouse to provide OLAP analyses. ROLAP architects believe that OLAP analyses are best provided directly against the relational database. (see OLAP systems & ROLAP).
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http://www.encyclo.co.uk/local/20477
Relational On-Line Analytical Processing
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