Summary Management with Oracle OLAP - OLAP

A basic feature of online analytical processing (OLAP) is the ability to analyze and view various levels of aggregate data. With Oracle OLAP, you can choose to store aggregate data within analytic workspaces or within materialized views.

Summary management for relational warehouses is managed by Oracle's query rewrite facility. Query rewrite enables a query to fetch aggregate data from materialized views rather than recomputing the aggregates at runtime. When the OLAP API queries a warehouse stored in relational tables, it uses query rewrite whenever possible. To prepare your relational warehouse for access by the OLAP API, you need to establish materialized views according to the guidelines described in this chapter.

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