以下关于数据库与文件的对应关系叙述错误的是______。 A) 在外存中,数据库以文件形式组织,文件由逻辑记录组成,记录由多个域组成 B) 关系表在逻辑上由一系列元组组成,元组由多个属性组成 C) 每个元组可以用数据库磁盘文件中的一个逻辑记录来存储,记录包括多个域 D) 元组的每个属性对应于文件记录中的一个记录
【单选题】Every summer, Jean Piaget retreats to his cabin in the Alps, where he spends most of his days analyzing the mass of research data generated over the past year at his Center for Genetic Epistemology. D...
A.
collect data for his research.
B.
avoid the city heat and enjoy the cool weather.
C.
live in his cabin where he could analyze the data he collected there.
D.
analyze his research data he had collected before.