QuickXDB: A Prototype of a Native XML DBMS ?

XML (extensible mark-up language) is a well established for- mat which is often used for semi-structured data modeling. XPath and XQuery (16) are de facto standards among XML query languages. There is a large number of dierent approaches addressing an ecient XQuery processing. The aim of this article is to introduce a prototype of an XML database called QuickXDB integrating these state-of-the-art approaches. We primarily describe main concepts of QuickXDB with stress on our XQuery processor. Furthermore, we depict main challenges such as iden- tification of patterns in an input query. Our experiments show strengths and weaknesses of our prototype. We outline our future work which will focus on a cost-based optimization of a query plan.