Specifies the definitions of data element types for electric components and materials and the definitions of the component classes. Provides a set of uniquely identified data element types with an unambiguously defined meaning, a defined value format, and a prescribed value domain for non-quantitative data element types. IEC 61360-4 is now available as a Database Standard IEC 61360-4 DB. An online version of the IEC 61360-4 DB (Common Data Dictionary - CDD) is available on the IEC website: IEC 61360-4 database.