在关系数据库中,数据的逻辑结构为
A.层次结构
B.树形结构
C.网状结构
D.二维表
正确答案是D
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/64594.html
上一篇:Passage Four The world population reached 6. 6 billionthis year,upfrom 6 billion in 1999. By 2025, researchers expect nearly 8 billion peoplewill be living on the planet. Ninety-nine per cent of those new inhabitantswill
Passage Four The world population reached 6. 6 billionthis year,upfrom 6 billion in 1999. By 2025, researchers expect nearly 8 billion peoplewill be living on the planet. Ninety-nine per cent of those new inhabitantswill
下一篇:记忆的过程可以概括为三个部分:识记、理解、回忆。