432 Enterprise Model Patterns Parameters and Characteristics Previously, both in the Abstraction Level 0 model and in each of the Abstraction Level 1 models, we saw the concept of a Characteristic that was given values for particular objects (Party, Activity, Asset, and Geography). The idea was that each of these could be described by values assigned in the course of collecting data about the respective objects. In each case, the ...Characteristic Value of a ...Characteristic was both for a particular object (a Party, an Activity, an Asset, or a Geographic Location), and given by a Party. Depending on the category, Characteristic could be "number of employees" (for a Company), "height" (for a Person), "duration" (for an Activity), "width" (for an Asset), and so forth. Figure 17-7 shows several significant things about the relationship between the laboratory and general data collection about an enterprise's