We describe the architecture and some aspects of System R/X, a native XML database engine that is built on the same mature infrastructure for a relational database and integrated ...
Even though an effective cost-based query optimizer is of utmost importance for the efficient evaluation of XQuery expressions in native XML database systems, such a component is...
Supporting queries and modifications on XML documents is a challenging task, and several related approaches exist. When implementing query and modification languages efficientl...
In this paper we investigate the feasibility and efficiency of mapping XML data and access control policies onto relational and native XML databases for storage and querying. We de...
Lazaros Koromilas, George Chinis, Irini Fundulaki,...