dirty dataˈdə:tiˈdeitə短语¹⁴⁴⁹⁷²⁺² 基本例句 恶劣数据 This is the default transaction isolation level. Each query executed by a transaction sees only data that was committed before the querybegan. An Oracle query never reads dirty data. 默认的隔离级别设置。事务中的查询只能看到在此查询之前 而非事务开始之前提交的数据。 china-b