“…Moreover, [83] studies the mapping between metadata and DQ issues, in particular, the connection between metadata (such as count of rows, count of nulls, count of values and count of value pattern), and data errors. In other matters, [47,71] apply a systematic literature review, the former to find works that consider DQ requirements during the process of developing an information system, the latter presents our preliminary results of review on DQ and context. In addition, in [9] the authors compare methodologies that have been proposed in the literature for information quality assessment and improvement.…”