User interface mechanism to formulate complex query against an entity relationship model

A graphical user interface and method of use thereof that allows users to interact with an entity relationship model. The user interface includes zones that allow users to navigate among the entities, roles and fields to create queries that are run against the model. Clicking on an entity in the shows the available fields for the entity. Users can drag and drop entities and fields onto a design surface to quickly and easily build queries. Rules are applied when either an entity or a field is dropped onto the design surface based upon the item being dropped (either an entity or a field), the position of the drop and also the properties that are associated with the item. Entities may be grouped and filtered to sort and limit the results of the query. After query is run, the results may be displayed in a separate area to the user.