Pathfinder meets DB2®
Manuel Mayr · 2008
We are taking the next big step towards the goal of a purely relational XQuery implementation. The Pathfinder XQuery compiler has been enhanced by a code generator that emits SQL. This code generator targets off-the-shelf relational database systems (e.g., DB2®) and turns them into efficient and scalable XQuery processors. Our approach neither depends on modifications of the database kernel, nor do we rely on built-in XML-specific functionality (SQL/XML, for instance). For that reason we are able to rest this work on query optimization techniques that have proven their effectiveness for pure SQL workloads.