The wide popularity of free-and-easy keyword based searches over World Wide Web has fueled the demand for incorporating keyword-based search over structured databases. However, mo...
Bei Yu, Guoliang Li, Karen R. Sollins, Anthony K. ...
SQL in the IBM® DB2® Universal Database™ for Linux®, UNIX®, and Windows® (DB2 UDB) database management product has been extended to support nested INSERT, UPDATE, and DELET...
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...
We introduce Xeek, a method for managing XML documents using relational databases. Most previous proposals in which the XPath axes are evaluated using only the pre- and postorder n...
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...