岗位面试题库合集-校园招聘面试题库-腾讯校招笔试题(含答案)
腾讯2013校园招聘技术类笔试题一、选择题1、数据库表设计最合理的是(A)A.学生{id,name,age},学科{id,name}分数{学生id,学科id,分数}B.学生{id,name,age},分数{学生id,学科名称,分数}C.分数{学生姓名,学科名称,分数}D.学科{id,name},分数{学生姓名,学科id,分数}解析:C,D肯定不对,B中将学科独立成一个表结构会更加清晰,一个实体对应一张表。2、在数据库系统中,产生不一致的根本原因是(D)A.数据存储量太大B.没有严格保护数据C.未对数据进行完整性控制D.数据冗余解析:基本概念3、15L和27L两个杯子可以精确地装(C)L水?A....
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