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
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单项选择题
In terms of M.J.Flynns taxonomy, the systolic array falls into()
A.SISD
B.MIMD
C.SIMD
D.MISD
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单项选择题
设散列表的当前状态如下:该散列表的负载因子约为
A.0.27
B.0.42
C.0.58
D.0.73
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