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What is NXD

Chapter 10
Handbook of Research on Innovative Database Query Processing Techniques
Native XML databases have an XML-based internal model and their fundamental unit of storage is XML.
Published in Chapter:
Spatiotemporal Query Algebra Based on Native XML
Luyi Bai (Northeastern University, China) and Changming Xu (Northeastern University, China)
Copyright: © 2016 |Pages: 19
DOI: 10.4018/978-1-4666-8767-7.ch010
Abstract
A formal algebra is essential for applying standard database-style query optimization to XML queries. We propose a spatiotemporal XML data model and develop such an algebra based on Native XML, for manipulating spatiotemporal XML data. After studying NXD spatiotemporal database and query framework, formal representation of spatiotemporal query algebra is investigated, containing logical structure of spatiotemporal database, data type system, and querying operations. It shows that the model and algebra lay a firm foundation for managing spatiotemporal XML data.
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