The significant relationships between OLAP features and PEU and PU for MOLAP and ROLAP systems are shown in Figures 2 and 3,respectively.
All features(except Query function) of ROLAP are perceived as useful.
On the contrary, only two features (Visualization
and Summarization) of MOLAP are perceived
to be useful.
Furthermore, in a ROLAP system, PEU is significantly related to PU; thus,
when the ROLAP features are perceived as
easy to use and user-friendly, it positively impacted the usefulness of ROLAP.