unrepeatable read meaning in English
不可重读
不可重复读
重复读
Examples
- Second lost updates problem ? a special case of an unrepeatable read
两次更新问题无法重复读取的特例。 - Unrepeatable read : thread one reads data ; the data is then overwritten by thread two . thread one tries to re - read the data but it has changed
线程1读去了数据；但是此数据接着被线程2修改了。线程1试图从新读取数据，但是数据已经被修改了。 - Unrepeatable read ? a transaction reads a row twice and reads different state each time . for example , another transaction may have written to the row , and committed , between the two reads
不可重复读一个事务对同一行数据重复读取两次，但是却得到了不同的结果。例如，在两次读取的中途，有另外一个事务对该行数据进行了修改，并提交。