This part of ISO 15143 specifies a data dictionary for the exchange of data in worksite data-controlled construction operations as specified in ISO 15143-1. It also applies to worksite data exchange for the purpose of services related to machine use (see ISO 15143-1:2010, Clause 4), and gives definitions of terms used in relation to the data dictionary. For the purposes of data exchange between different systems, it includes — identification, definition and specification of common items of data to be exchanged on typical earth-moving construction worksites, — definition of application schema, — metadata describing the attributes of each data element, and — basic normative data elements with their attributes (in tabular format). NOTE ISO 15143-1:2010, Annex A, describes the means to extend the data element table presented in Annex A of this part of ISO 15143.