primary transaction

When the primary key violation error occurs, the entire transaction is rolled back and no rows are added to the destination table.

在发生了主键冲突错误时，回滚整个事务并且不会将任何行添加到目标表。

If the primary database is accessible, back up the active transaction log and apply the log backup to the secondary databases.

如果可以访问主数据库，则请备份活动的事务日志，并将日志备份应用到辅助数据库。

Transaction logs are synchronized from the primary database to the standby database automatically ( Figure 4).

事务日志自动从主数据库同步到备用数据库（图4）。

The pre-sale of commercial housing becomes the primary form of transaction.

商品房预售成了商品房交易市场的主要的交易方式.

Financial reinsurance has a prominent role when primary insurers could pass on part of the risk to re-insurers, recognizing related expenses as transaction costs under re-insurance, which effectively spread the risk.

财务再保险作用突出，通过它原保险人可将部份风险转嫁给再保险人，将相关费用确认为再保险交易支出，这样能使风险得到有效分散。