Methods and apparatus for integrating relational and hierarchical data, schema definitions, and queries in a data processing system are provided. It is determined if one or more schema definitions or one or more query expressions are provided as input to the data processing system. The one or more schema...http://www.google.com/patents/US20080082514?utm_source=gb-gplus-sharePatent US20080082514 - Method and apparatus for integrating relational and hierarchical data
