Adopts identically IEEE Std 1484.13.12012 which defines a conceptual model for interpreting externalized representations of digital aggregations of resources for learning, education, and training. The conceptual model defines a set of concepts and the relationships among them and is expressed as a formal ontology. Internal compositions and uses of digital resources are not specified nor are processing methods for resource aggregations.KEYWORDS: Digital aggregations; Ontology; Conceptual.