By using active and passive management for ORACLE and optimize tools like SQL TRACE EXPLAIN PLAN and ORACLE OPTIMIZER, the query response time is shortened and the efficiency is improved.
通过对Oracle性能的主动和被动管理，以及优化工具SQLTrace、EXPLAINPLAN和优化器的使用，缩短了数据仓库用户查询响应的时间，提高了查询效率。
Like other relational database management systems such as Oracle and SQL Server, Informix has its internal optimizer, which is responsible for selecting the best query execution plan.
与Oracle和SQLServer等其他关系数据库管理系统一样，Informix也有内部优化器，负责选择最佳的查询执行计划。
Like other relational database management systems such as Oracle and SQL Server, Informix has its internal optimizer, which is responsible for selecting the best query execution plan.
与Oracle和SQLServer等其他关系数据库管理系统一样，Informix也有内部优化器，负责选择最佳的查询执行计划。
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