A database system for processing a query request comprises a master node that communicates a request to perform one or more activities associated with a precompiled query over at least one communication channel. A plurality of slave nodes are coupled to the master node. At least a particular one of the...http://www.google.co.uk/patents/US7797333?utm_source=gb-gplus-sharePatent US7797333 - System and method for returning results of a query from one or more slave nodes to one or more master nodes of a database system