Journal of Digital Information Management Luyi Bai, Zhiyi Jia, Jiemin Liu 15 1 2017 http://dline.info/fpaper/jdim/v15i1/jdimv15i1_1.pdf With the rapid development of the Internet, XML (Extensible Markup Language) is increasingly gaining acceptance as a medium for integrating and exchanging data. Meanwhile, object-oriented database has a strong ability to store data, XML can benefit greatly and specifically from database support and object-oriented database management system. Consequently, it is significant to exchange data from object-oriented database to XML. In particular, taking spatiotemporal information existing in many practical applications into consideration, we study the spatiotemporal data models and the problem of exchanging spatiotemporal data from object-oriented database to XML. In order to find an XML Schema which is the best description of the existing object-oriented database, we propose a comprehensive approach to focus on a set of mapping functions to accomplish the transformation of spatiotemporal data.