Database Application Classes Online transaction processing(OLTP) requires high concurrency and clever techniques to speed up commit processing,to support a high rate of update transactions. Decision support applications including online analytical processing,or OLAP applications require good query evaluation algorithms and query optimization. Architecture of some database systems tuned to one of the two classes E.g.,Teradata is tuned to decision support Others try to balance the two requirements E.g.,Oracle,with snapshot support for long read-only transaction Database System Concepts-7th Edition 25.14 ©Silberscha乜，Korth and SudarshanDatabase System Concepts - 7 25.14 ©Silberschatz, Korth and Sudarshan th Edition Database Application Classes ▪ Online transaction processing (OLTP) • requires high concurrency and clever techniques to speed up commit processing, to support a high rate of update transactions. ▪ Decision support applications • including online analytical processing, or OLAP applications • require good query evaluation algorithms and query optimization. ▪ Architecture of some database systems tuned to one of the two classes • E.g., Teradata is tuned to decision support ▪ Others try to balance the two requirements • E.g., Oracle, with snapshot support for long read-only transaction