Updating olap dimensions

In earlier work, we defined a taxonomy for these dimension updates and a minimal set of operators to perform them.

In this paper we present conforms to the OLE DB for OLAP norm, so it can be used by any client application based on this norm, and can use as back-end any conformant relational server.

Whenever new data arrives and made an entry in that table we need to update the current values in the cube like a trigger.If performance is too slow, there is a third option called HOLAP (Hybrid OLAP), which stores the data in the relational database but the aggregations in the OLAP database.When the source data is updated the aggregations will be processed again.If you are updating the cube incrementally, then your table does not need to contain all the cumulative data.However, if you are rebuilding the cube, then your input tables must contain all the data from the original build and all the incremental updates.

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