【简答题】List the names for the instructors as the format of names followed by the string " teacher' based on the SQL statement for the SQL server software; select name from instructor; note that: all the lett...
【单选题】操作も簡単で、 たいきゅうせい もあります。 1抵抗性 2対抗性 3耐久性 4退廃性
【简答题】我们知道,十进制小数0.5表示成二进制是0.1,十进制小数0.25表示成二进制是0.01,十进制小数0.75表示成二进制是0.11,那么十进制数小数0.387表示成二进制的结果是(精确到小数点后8位数字)____________
【单选题】All instructors will allow somewhat changed focus in the original topic.
【简答题】Find the department names of all instructors, and remove duplicates
【判断题】判断题:“君子忧道不忧贫”意思是说,君子忧虑的是道之不行,不忧虑是否贫穷。判断对错
【判断题】. 轮状花冠、漏斗状花冠、钟状花冠、管状花冠都为两侧对称。()
【简答题】List the average salary of all instructors from the instructor relation, then rename the new column of the average salary to avg_salary.
【简答题】The schemas of the instructor and teachs are as follows. Find the names of all instructors who have taught some course and the corresponding course_id.