For example, when a transaction is distributed, the data might be lost by one of the participants, even after the transaction was committed.
例如，分布事务时，数据可能被其中一个参与者丢失，甚至是在事务提交以后。
The EJB container verifies that none of the data updated by a transaction has changed before committing the transaction.
EJB容器在事务提交之前确认由该事务更新的数据有无更改。
Ensuring data consistency in this environment requires some from of transaction management by a transaction coordination service (TCS).
确保此环境下的数据一致性需要事务协调服务(Transaction Coordination Service,TCS)的某种形式的事务管理。
This is because a transaction will time out after it has been active for 120 seconds by default, meaning that you need to have at least 120 seconds of trace data prior to the transaction timeout.
这是因为在缺省情况下事务将会在处于活动状态120秒后超时，这意味着您至少需要在事务超时前120秒钟的跟踪数据。
In each scenario, data changes are synchronized automatically, transaction by transaction, or on demand.
在每一种场景中，数据修改都将被自动同步，可以逐一执行同步，也可以按需同步。
For a transaction that is active when a snapshot transaction starts, all data modifications by that transaction, even after that transaction commits, are ignored by the snapshot transaction.
对于在快照事务启动时活动的事务，快照事务将忽略由其进行的所有数据修改，即使在事务提交后也是如此。
Each query executed by a transaction sees only data that was committed before the query (not the transaction) began. An Oracle query never reads dirty (uncommitted) data.
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。
Its characteristic is that the candidate set is adopted by the key word identifies, and at the same time transaction data is compressed by transaction and item.
该算法的特点是：项目集采用关键字识别，同时对事务数据进行事务和项目压缩。
Its characteristic is that the candidate set is adopted by the key word identifies, and at the same time transaction data is compressed by transaction and item.
该算法的特点是：项目集采用关键字识别，同时对事务数据进行事务和项目压缩。
应用推荐