In relation to the management and administration of a company:

(b) Explain the process through which a transaction in which there is an interest is approved. (2 marks)

要求按成绩降序排序，输出“文学系”学生选修了“计算机”课程的学生姓名和成绩。请将下面的SQL语句填写完整。　　SELECT姓名，成绩FROM学生表，选课表；　　WHERE 【 】 AND 【 】 AND 【 】 ；　　ORDER BY成绩DESC