保存这些数据以帮助你进行后续操作。
A: Keep the data to help you with subsequent procedures.
B: Retain the data to aid later stages.
C: Retain the data to assist later stages.
A: Keep the data to help you with subsequent procedures.
B: Retain the data to aid later stages.
C: Retain the data to assist later stages.
举一反三
- It's not how much data you collect,but the value of the data collected that will help you run your business.
- 以下代码运行结果为( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select * from user');$data = mysqli_fetch_array($result); A: 变量data保存了user表所有数据 B: 变量data保存了user表1条数据 C: 变量data保存了user表的2条数据 D: 变量data保存了user表的3条数据
- Telephone etiquette will help you to acquire and retain clients.
- 设T1和T2两个事务，他们对数据data的并发操作如下表所示(SLOCK data表示对数据data上S锁，UNLOCK data表示对数据data解锁)，对这个并发操作，下面说法正确的是______。 T1 T2 ①请求 SLOCK data 读 data=20 ② ③A=A+30 写回 A=50 COMMIT UNLOCK data ④ 请求 SLOCK data 读data=20 写回data=50 COMMIT UNLOCK data A: 该操作部能重复读 B: 该操作符合完整性要求 C: 该操作的第①步中，事务T1应该申请X锁 D: 该操作的第②步中，事务T2不可能得到对data的锁
- It's the value of the data collected that will help you run your business.