1. A method of data processing, comprising: accessing a data model of a modeled environment within a database, said data model including data defining a plurality of hierarchically arranged subsets of space within the modeled environment and data defining a plurality of items populating the modeled environment; displaying, within a display device of a data processing system, a first window displaying a map of the modeled environment, said map including at least one user-selectable graphical element representing one of said plurality of hierarchically arranged subsets of space or one of said plurality of items; displaying within the display device a second window; in response to a first user input, copying a graphical element from said first window and displaying said graphical element within the second window; and in response to a second user input selecting said graphical element within said second window, presenting data from said database associated with said subset of space or item represented by said graphical element.