Patent ID: 7945551
Filing Date: 2011-05-17
Classification: G06F

Abstract:
1. A method employed in a distributed database system that includes a plurality of database systems for responding to a request received in a particular database system of the plurality of the database systems, the particular database system of the plurality of the database systems including a query engine and a database and the method performed in the particular database system's query engine comprising: placing the request in a form required for execution in the particular database system, wherein the request includes a SQL statement; determining when the request is parsed whether an execution of the request is preferably done at least in part in another database system of the plurality of the database systems; modifying the form when it has been determined that the request is preferably executed at least in part in the other database system, the form required for execution is a cursor and the cursor is marked for redirection; and redirecting that part of the execution to the other database system, wherein the modified form is redirected.