物化视图可以用作快速非名词化大表吗?
Oracle物化视图可以用来连接多个具有外键的相关表来创建一个更大的非规范化大表并立即刷新吗?
在一些调查中,它说不允许加入,而使用快速刷新。
我可以使用 Oracle Materalized 视图做这种事情,我的假设是错误的吗?
Can Oracle Materialized views be used to join multiple related tables having foreign keys to create a larger denormalized big table which is refreshed instantaneously?
On some investigations, it says that joins are not allowed while using fast refresh.
Is it my assumption which is wrong that i can do this sort of thing with Oracle Materalized views?
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假设所有表都是本地的(即您不尝试从远程数据库复制数据并一步完成所有连接),您需要注意的限制列在 数据仓库指南,而不是复制手册。具体的限制集取决于 Oracle 版本,但您应该能够创建可快速刷新的数据非规范化视图。
Assuming all the tables are local (i.e. you are not trying to replicate the data from a remote database and do the joins all in one step), the restrictions you need to be aware of are listed in the Data Warehousing Guide, not the replication manual. The specific set of restrictions depends on the Oracle version but you should be able to create a fast-refreshable denormalized view of your data.