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依据36题的关系模式，试用SQL语句查询2010年5月以前租借音像制品的会员编号。（注：租借日期为字符型，格式为2010/01/01）
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视图被用来对无权用户屏蔽数据。用户只能使用视图定义中的数据，而不能使用视图定义外的其他数据，从而保证了数据________。
由于关系模式设计不当所引起的插入异常指的是( )A.未经授权的用户对关系进行了插入操作B.两个事务并发地对同一关系进行插入而造成数据库的不一致C.由于码值的部分为空而不能将有用的信息作为一个元组插入到关系中D.向关系中插入了不该插入的数据
某职工管理系统的数据库包含如下关系表： 职工 ( 职工号，姓名，性别，年龄 ) 工程 ( 工程号，工程名称，预算 ) 报酬 ( 职工号，工程号，工资 ) 实现下列操作：
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Passage Three Eating an apple a day doesn' t keep the doctor away, but it does reduce the amount of trips you make to the drug store per year. That’ s according to a new study that investigates whether there' s any truth in the old saying.A team of researchers led by Dr Matthew Davis, of the University of Michigan School of Nursing, asked 8, 399 participants to answer survey questions about diet and health. A total of 753 were apple eaters, consuming at least 149g of raw apple per day. The remaining 7, 646 were classed as non-apple eaters. When both groups answered questions on trips to the doctor and trips to the drug store per year, the apple eaters were found to be 27% less likely to visit the druggist for drugs.Trips to the doctor were not significantly affected by apple consumption, though." Evidence does not support that an apple a day keeps the doctor away. However,the small number of uUS adults who eat an apple a day does appear to use fewer prescription medications," the study concludes.Apple eaters were also found to be less likely to smoke and be more likely to have a higher educational attainment than non- apple eaters. While apples do not compete with oranges, they docontain some immune (免疫的) system- increasing vitaminC，which may be why apple -eaters visit the druggist less. With over 8mg of vi taminC per medium-sized fruit, an apple can provide roughly 14% your daily recommendedintake.Previous studies have also linked apple consumption to a lower risk of Type 2diabetes (二 型糖尿病) , improved lung function and a lower risk of colon (结肠) can cer.
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下面的多媒体软件工具中，由Windows自带的是____。
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Nobody but doctors and those ______ by Dr Zhang ______ to enter the patient’s room.(1分)
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