用php和mysql做一个教务管理系统

mysql里面加一个记录角色的字段 ，比如user_type, 然后存1，2，3，然后根据user的那个字段来做具体的 *** 作

if ($user['user_type'] == 1 )

{

echo '我是学生'

}

elseif ($user['user_type'] == 2 )

{

echo '我是老师'

}

...........

你这个不复杂，access就可以满足。

想有点水平就上mysql。

sqlserver收费的，你就 没必要用了。

oracle就不用考虑了 ，浪费资源。

1.尽管缺乏资金，他还是继续他的实验。（to carry on) Though he was short of money, he decided to carry on his experiment 2.上大学期间，他不时在图书馆里寻找资料。（from time to time) During his college life, he looked for datas in the libary from time to time 3.这项新政策可能会导致石油价格进一步上涨。（to lead to) This new policy may be to lead to further increase of oil price 4.这个周末你不可能去滑雪。（out of the question) It's out of the question that you can go skiiing this weekend. 5.美国与其他十五个国家一起计划建立一个国际空间站。（along with) The U.S.A along with other fifteen countries together plans to set up an international space station.

---