Why use a READ UNCOMMITTED isolation level?
stackoverflow.com
Why use a READ UNCOMMITTED isolation level?
数据库基本支持五种标准 SQL 事务级别：未提交读取、已提交读取、可重复读取、快照隔离和可序列化
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The purpose of metadata is not simply to describe data and information assets, but rather to proactively answer questions that consumers might have about them. Where did this data come from? How up to date is it? How trustworthy is it? What business process(es) created it? What business process(es) use it? What transformations or filtering have bee... See more
Larry Burns • The Currency of Information: Managing Data as an Asset (Part Three)
Slaves are therefore read-only from the application's point of view while a master is read-write.