Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...
Nested iteration is an important technique for query evaluation. It is the default way of executing nested subqueries in SQL. Although decorrelation often results in cheaper non-n...
Ravindra Guravannavar, H. S. Ramanujam, S. Sudarsh...
: Access control is an important aspect in guaranteeing data privacy within XML data sources which are accessed by users with different access rights. The goal of predicative acces...
Complex event processing (CEP) has become increasingly important for tracking and monitoring applications ranging from health care, supply chain management to surveillance. These ...
Mo Liu, Medhabi Ray, Elke A. Rundensteiner, Daniel...