Table 2 Describing entities, model entities, and real world entities and their order
ISO 11179 descriptive entity | ISO 11179 definition | Notation within the GFO framework | Example: model entity, being an instance of a descriptive entity | Real world entity, modeled by a model entity |
|---|---|---|---|---|
metadata object | is an object type, defined by metamodel | metadata type (2) | Classes (1) : Object_Class;Characteristic | Categories (2) : Object class; Property |
metadata item | is an instance of a metadata object | metadata item (1) | Objects (0) : Person; Blood Pressure | Categories (1) : Person; Blood Pressure |
type of application level data | is specified by a metadata item | application level data type (2) | Classes (1) : Person; Blood Pressure | |
real world data | is an instance of application level data type | application level data item (1) | Objects (0) : John; Blood Pressure of John | Individuals (0) : John; Blood Pressure of John |