Difference Between ROLAP and MOLAP

In this post, we will understand the difference between ROLAP and MOLAP.

ROLAP

• It stands for Relational Online Analytical Processing.

• It is used for large volumes of data.

• The access time in ROLAP is slow.

• It stores data in the form of relation tables.

• The data in ROLAP is fetched from a data warehouse.

• It uses complex SQL queries.

• A static multidimensional view of the data is created in ROLAP.

MOLAP

• It stands for Multidimensional Online Analytical Processing.

• It is used for less/limited volumes of data.

• The access time is quick in MOLAP.

• Data is stored in a multidimensional array.

• Data is fetched from the MDDBs database.

• A sparse matrix is used in MOLAP.

• Dynamic multidimensional view of the data is created in MOLAP.