Data elements form the basis of sales and marketing information systems. They define what is actually recorded in the system. Examples include the number of hats from a different manufacture in Mr. B store. A data element assigns a certain meaning to the table fields and is defined over a domain while a field is defined over an element.
Data elements must conform to ISO/IEC 11179 metadata registry and should consist of the following primary parts; element ID, name of the element, aliases, specification of base or derived elements and length of the element. Others include object property, type