<p>The present invention discloses a query process engine selection method. The query process engine selection method is used in a data processing system including multiple query process engines. The method includes: a query reception step; a query process engine evaluation step of evaluating the query process engines which are to process the query; a query transmission step of transmitting the query to one of the query process engines selected based on the evaluation result obtained in the query process engine evaluation step; and a query processing step of enabling the selected query process engine to process the query.</p>
