Comparing DB2 materialized query tables and Oracle materialized views

(Burt L. Vialpando and Vikram S. Khatri) In DB2, a materialized query table (MQT) is a table whose definition is based on the result of a query. As such, the MQT typically contains precomputed results based on the data existing in the table or tables that its definition is based on. If the query compiler determines that a query will run more efficiently against an MQT than the base table or tables, the query executes against the MQT and you obtain the result faster than you otherwise would. This concept is identical to the materialized view concept in Oracle.