问题
单项选择题
如果有两个事务，同时对数据库中同一数据进行操作，不会引起冲突的操作是
A．其中有一个是DELETE
B．一个是SELECT，另一个是UPDATE
C．两个都是SELECT
D．两个都是UPDATE
答案
参考答案：C
解析： 如果有两个事务，同时对数据库中同一数据进行操作，除SELECT外，其余SQL语句不能同时使用的，否则会引起冲突。
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如果有两个事务，同时对数据库中同一数据进行操作，不会引起冲突的操作是
A．其中有一个是DELETE
B．一个是SELECT，另一个是UPDATE
C．两个都是SELECT
D．两个都是UPDATE
参考答案：C
解析： 如果有两个事务，同时对数据库中同一数据进行操作，除SELECT外，其余SQL语句不能同时使用的，否则会引起冲突。
根据短文内容从方框中选择正确词的正确形式填空，每个词只用一次。将答案写在答题卡相应的位置上。(共10个小题，每个小题1分，满分10分）
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