Research into metamorphism plays a pivotal role in reconstructing the evolution of continent, particularly through the study of ancient rocks that are highly susceptible to metamorphic alterations due to multiple tectonic activities. In the big data era, the establishment of new data platforms and the application of big data methods have become a focus for metamorphic rocks. Significant progress has been made in creating specialized databases, compiling comprehensive datasets, and utilizing data analytics to address complex scientific questions. However, many existing databases are inadequate in meeting the specific requirements of metamorphic research, resulting from a substantial amount of valuable data remaining uncollected. Therefore, constructing new databases that can cope with the development of the data era is necessary. This article provides an extensive review of existing databases related to metamorphic rocks and discusses data-driven studies in this. Accordingly, several crucial factors that need to be taken into consideration in the establishment of specialized metamorphic databases are identified, aiming to leverage data-driven applications to achieve broader scientific objectives in metamorphic research. [ABSTRACT FROM AUTHOR]

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