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BI Encyclopedia


What is ROLAP?

ROLAP (Relational Online Analytical Processing) uses multidimensional data models to analyze data, and does not require the pre-computation and storage of information. ROLAP tools access the data in a relational database and generate SQL queries to calculate information.

Advantages of ROLAP include:

Considered to be more scalable in handling large data volumes

Faster loading than the automated MOLAP loads

Data is stored in a standard relational database and can be accessed by any SQL reporting tool

Tools are better at handling non-aggregatable facts

Possibility to successfully model data that would not fit into a strict dimensional model

Leverages database authorization controls