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Online analytical processing
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==== Downside of flexibility ==== Some companies select ROLAP because they intend to re-use existing relational database tables—these tables will frequently not be optimally designed for OLAP use. The superior flexibility of ROLAP tools allows this less-than-optimal design to work, but performance suffers. [[#Multidimensional_OLAP_.28MOLAP.29|MOLAP]] tools in contrast would force the data to be re-loaded into an optimal OLAP design.
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