Application Information System data elements (operating version) provides official information on the data elements of information systems in public administration and serves the announcement and publication of data elements dials. Data elements declared in the Information System data elements are for public administration and custody of their information systems mandatory.

This system was developed in accordance with Act No. 365/2000 Coll. PAIS and appropriate follow-up implementing legislation - Decree of the Ministry of Informatics of the Czech Republic No. 469/2006 Coll. on the information system of data elements. On that basis, this information system routinely operated from 1 January 2007.

Semantically related data elements are grouped into data dictionaries. Each data dictionary is for use in the communication of public administration information systems presented in an XML Schema. For each data dictionary also exists documentation in PDF format. Both diagrams, data dictionaries, and documentation are automatically generated from the source data.