Research on the practice and exploration progress of data journals

With the booming trend of data publishing, data journals have carried out much extensive practice for the exploration of open data sharing. This study focuses on the publishing practice of data journals, which took representative, relatively mature and different disciplinary scopes of data journals as the research objects. The publishing volume and proportion of data papers in data journals are calculated. Based on the author's practical experience in data publishing for several years, this study explores the formulation rules and implementation of data publishing policies. The study results show that data journals generally have well-developed regulations on data use license, data storage and permanent identifier, associated access from paper to data, data review, standardized data citation, but with few practical cases of data update and less attention paid to the problem of data security and data copyright. To facilitate the further development of data journals, we proposed in this study that more operational and reference details of data publishing should be considered in the practice of data publishing in journals.