【单选题】【消耗次数：1】
数据库的概念模型独立于（ ）。
①
具体的机器和DBMS
②
E-R图
③
信息世界
④
现实世界
参考答案：
复制
纠错
相关题目
【多选题】
在数据库中，概念模型的相关表述不正确的是？
①
用于现实的建模，与具体的DBMS有关
②
用于信息世界的建模，与具体的DBMS有关
③
用于现实的建模，与具体的DBMS无关
④
用于信息世界的建模，与具体的DBMS无关
随机题目
【单选题】
The manager______ at 8:30 AM for the meeting, but he didnt show up.
①
ought to arrive
②
should have arrived
③
should arrive
④
was supposed to arrived
【单选题】
I intend to ______ a larger order if you give me a discount.
①
place
②
play
③
pose
④
pick
【单选题】
When you are______, sit at the front edge of the chair, leaning forward slightly.
①
seated
②
fixed
③
rested
④
decided
【单选题】
_____withthesizeofthewholeearth,thehighestmountaindoesnotseemhighatall.
①
When compared
②
Compare
③
While comparing
④
Comparing
【单选题】
____________the rainny weather, they would be all right.
①
Were it not for
②
It were not for
③
Not for it
④
For it were not
【单选题】
The woman was innocent and the judge insisted that she______at once.
①
be set free
②
be setting free;
③
was set free
④
set free
【单选题】
But considering the long-standing business relationship between us, we shall ______ you a special discount.
①
grade
②
grasp
③
grant
④
glance
【单选题】
______ the storm, we should have reached our company.
①
Because of
②
In spite of
③
In case of
④
But for
【单选题】
The rug is______ much better quality. It is made of 80% cotton and 20% wool.
①
from
②
of
③
in
④
at