She was angry, went out, and slamming the door behind her.
A B C D
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(3 ) 事务 T 1 、 T 2 和 T 3 按如下调度方式并发地对数据项 A 、 B 、 C 进行访问 , 假设 A 、 B 、C 的初值分别为 A=20 ,B=30 , C=40 。
① 在事务 T 2 刚完成提交后,数据库中 A 、 B 、 C 的值各是多少?(3 分)
② 当事务 T 3 结束后,给出该并发调度对应的日志文件,并说明此时 A 、 B 、 C 的值各是多少?(7 分)
It is shown that there are usually________ levels of hazardous gases, particulate matter and other chemical nasties indoors than outside.
and fatigue. Such immediate effects are 1 short-term and treatable.
The study done by Thomas J. Stanley shows that more than 80% of millionaires say their success are due to ___________.