Abstract: A method, computerized system and Graphical User Interface for creating storing, manipulating and visually depicting heterogeneous multimedia data items, as well as for depicting, identifying, defining and analyzing the relationships between data items. In the preferred embodiment, the data items are clustered into classification data clusters, Master Facets, which may also be interconnected and the relationships for which may also be defined, analyzed and graphically depicted. The nature of the relationships between data items may be any kind of Boolean, logical or even illogical connection or association that is unique to the user.