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如果事务T获得了数据项Q上的排它锁，则T对Q （C）
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如果事务T获得了数据项Q上的排它锁，则T对Q （C）
A、只能读不能写
B、只能写不能读
C、既可读又可写
D、不能读不能写
时间：2021-07-17 23:57
关键词：
电子商务
高起专
数据库原理与应用
2020级第一学期期末考试
答案解析
C
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