题目内容：
建立冗余数据最常用的技术是（）。
A.数据转储
B.事务并发技术
C.数据库恢复技术
D.登记日志文件
参考答案：
选择题：建立冗余数据最常用的技术是（）。
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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