Standards/LOM Standards LOM Standard is a multi-part standard that specifies Learning Object Metadata, trough a conceptual data schema that defines the structure of a metadata instance for a learning object [14].
For this Standard, a learning object is defined as any digital or non-digital entity that may be used for learning, education or training. A metadata instance for a learning object describes relevant characteristics of the learning object to which it applies. Data elements describe a learning object and are grouped into categories. The LOM data model is a hierarchy of data elements, including aggregate data elements and simple data elements, the leaf nodes of the hierarchy.
Its schema consists of nine such categories, each of them structured following a hierarchic architecture:
  1. The General category groups the general information that describes the learning object as a whole.
  2. The Life cycle category groups the features related to the history and current state of this learning object and those who have affected this learning object during its evolution.
  3. The Meta-Metadata category groups information about the metadata instance itself (rather than the learning object that the metadata instance describes).
  4. The Technical category groups the technical requirements and technical characteristics of the learning object.
  5. The Educational category groups the educational and pedagogic characteristics of the learning object.
  6. The Rights category groups the intellectual property rights and conditions of use for the learning object.
  7. The Relation category groups features that define the relationship between the learning object and other related learning objects.
  8. The Annotation category provides comments on the educational use of the learning object and provides information on when and by whom the comments were created.
  9. The Classification category describes this learning object in relation to a particular classification system.