System and method for an in-memory roll up-on-the-fly OLAP engine with a relational backing store

摘要

A system and method having an in-memory rollup-on-the-fly OLAP engine with a relational backing store. The system and method allow for modification to the structure of the in-memory rollup-on-the-fly OLAP engine in real time during operation. These modifications may be written to its backing store in real time and include changes both to Fact Values and to Dimensional Hierarchies.