▪An application function or process can operate on data objects.

▪A data object may be communicated through interactions and used or produced by application services.

▪A data object can be accessed by an application function, application interaction, or application service.

▪A data object may realize a business object, and may be realized by an artifact.

▪A data object may have association, specialization, aggregation, or composition relationships with other data objects.

▪The name of a data object should be a noun.