Question : can someone explain to me the difference between OLAP and ROLAP

i have searched using google, but its still not clear.
I understand the OLAP (cube) methode .. but the difference is not clear with ROLAP. By best guess is that in ROLAP some dimensions/measures are taken out and put into a relational table outside the OLAP. For example a groupname and teamname.

Can someone make this clear for me? my preference is own written text and not a link, cause i can use google myself too.

Answer : can someone explain to me the difference between OLAP and ROLAP

Well,  yes -  relational see below.

> HOLAP = combination of both
HOLAP is a combination of ROLAP and MOLAP which are variations of OLAP. HOLAP allows storing part of the data in a MOLAP store and another part of the data in a ROLAP store. The degree of control that the cube designer has over this partitioning varies from product to product.

> ROLAP = star diagram like in access and sql
ROLAP does not require the pre-computation and storage of information.
It calculates information from a relational database and generate SQL queries when requested.
With ROLAP, it is possible to create additional database tables (summary tables or aggregations)
which summarize the data at any desired combination of dimensions.

HTH

Ivo Stoykov