承担建立、维护和管理数据和数据库系统任务的人员叫做 _________。
数据库管理员(或DBA)
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上一篇:阅读下列案例,回答问题。每年的11月11日俗称“光棍节”,近几年也成为各大电子商家的狂欢节。众多电商在这一天使出浑身解数,进行五花八门的促销活动。诸如买一送二、数量折扣、买即有礼、无条件退货等,使得各商家在“光棍节’大获全胜,销售额连年攀升。同时,年轻的消费者也得到很大的实惠。下表是某电商近五年“光棍节”的销售额:It is not surprising that people 21______ ever associate Britain with wine and in fact it may astonish you to learn that grapes are grown 22______ in England and nearly 200,000 bottles of wine were sold in 1975. 23______ very new in growing grapes in
阅读下列案例,回答问题。每年的11月11日俗称“光棍节”,近几年也成为各大电子商家的狂欢节。众多电商在这一天使出浑身解数,进行五花八门的促销活动。诸如买一送二、数量折扣、买即有礼、无条件退货等,使得各商家在“光棍节’大获全胜,销售额连年攀升。同时,年轻的消费者也得到很大的实惠。下表是某电商近五年“光棍节”的销售额:It is not surprising that people 21______ ever associate Britain with wine and in fact it may astonish you to learn that grapes are grown 22______ in England and nearly 200,000 bottles of wine were sold in 1975. 23______ very new in growing grapes in