Oracle中的视图和实例化视图之间有什么区别? [英] What is the difference between Views and Materialized Views in Oracle?
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问题描述
Oracle中的视图和实例化视图之间有什么区别?
What is the difference between Views and Materialized Views in Oracle?
推荐答案
物化视图基于磁盘，并根据查询定义定期更新.
Materialized views are disk based and are updated periodically based upon the query definition.
视图仅是虚拟的，每次访问时都运行查询定义.
Views are virtual only and run the query definition each time they are accessed.
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