How would you design an Hbase table
for many-to-many association between
two entities,for example Student and
Course?

I would define two tables:

Student: student id student data
(name,address,…) courses (use
course ids as column qualifiers here)

Course: course id course data (name,
syllabus,…) students (use student
ids as column qualifiers here)

This schema gives you fast access to
the queries,show all classes for a
student (student table,courses
family),or all students for a class
(courses table,students family).

您如何满足这一要求：“给我所有共享至少两门共同课程的学生”？您可以在HBase中构建一个返回该集合的“查询”,还是必须检索所有相关数据并在代码中自行处理？