请教以下数据库现象是否也属于“脏读”? 众所周知,脏读的定义在SQL92标准中是这样定义的:
SQL-transaction T1 modifies a row. SQL- transaction T2 then reads that row before T1 performs a COMMIT. If T1 then performs a ROLLBACK, T2 will have read a row that was never committed and that may thus be considered to have never existed.