What is true about updates through a view? () You cannot update a view with group functions.。 When you update a view group functions are automatically computed.。 When you update a view only the constraints on the underlying table will be in effect.。 When you update a view the constraints on the views always override the constraints on the underlying tables.。
建设工程实行监理时,施工方项目经理是()的代理人。 A.发包人 。 B.监理单位 。 C.承包人 。 D.施工项目部。
Given: What is the result?() Compilation succeeds.。 Compilation fails due to multiple errors.。 Compilation fails due to an error only on line 20.。 Compilation fails due to an error only on line 21.。 Compilation fails due to an error only on line 22.。 Compilation fails due to an error only on line 12.。
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According to the datasheet published on the IBM website, the TS7610 ProtecTIER ApplianceExpress is ideal for:() weekly full backups of 5 TB or less。 weekly full backups of 3 TB or less。 weekly full backups of 1.5 TB or less。 daily incremental backups of 3 TB or le。
小章和小胡是中学的同班同学,又来自相邻的山村,还属表亲。高中毕业那年,两人几乎以同样优秀的成绩考进了同一所本科院校。进大学以后,小章的学业成绩仍然优秀,小胡在大一时却出现了多门不及格,在留级线上挣扎的现象。要解决小胡的学习后进问题,教师可以在()等方面作努力。