DL2: Presentation of Metadata and of the Quality Certificate

This report is aimed at the definition of the metrics of data quality based on processes and at the definition of metadata on which a certificate can be produced to certify the quality of data. In particular, data quality dimensions are classified into four categories: subject dimensions, object dimensions, process dimensions, and architectural dimensions. For each dimensions the metadata involved in measurement process are described. A selection of relevant data quality dimensions in a CIS context is proposed in order to focus the project activity on this apropos set. Finally, the structure of quality certificate that can be associated with data flowing across different organizations is defined.