The XQuark project has released XQuark Fusion 1.0.0 and XQuark Bridge 1.0.0. XQuark Fusion is an "information integration engine, based on XQuery, for querying in real-time multiple, heterogeneous and distributed data sources." Data sources include relational databases wrapped through XQuark Bridge and XML files. "XQuark Bridge expands existing relational database functionalities with advanced XML import/export capabilities. It supports flexible extraction and publishing of relational data into any target XML format, using the XQuery language. Using a powerful mapping language, it can also perform efficient insertion of structured XML data into existing relational tables, while taking into account the database integrity constraints and transforming the implicit relations appearing in the XML document into explicit ones in the database." Both are published under the LGPL.