Help with query involving aggregation and joining.

Hi,

I have not been able to construct an SQL statement for
my task. What seemed like a simple query turned out to
be beyond my capability. Any help will be very much
appreciated.

My requirements involve several large tables. I have
simplied scenario into the follow two fictional tables
which describes the same requirements.

HISTORY
=======
id | courseId | submission
---+-----------+-------------
1 | 101 | 2002-01-20
2 | 102 | 2002-02-17
3 | 104 | 2002-04-30
4 | 102 | 2002-02-22
5 | 104 | 2002-03-15
6 | 104 | 2002-01-21


COURSE
======
id | name
------+-----------
101 | Physics
102 | Chemistry
103 | Biology
104 | Maths
105 | English

Basically I would like to display the latest
submission for each course in a table as shown below,
order by name of the courses.

Query Results:
==============
id | courseId | name | submission
---------------------------------------
4 | 102 | Chemisty | 2002-02-22
3 | 104 | Maths | 2002-04-30
1 | 101 | Physics | 2002-01-20

I have tried many different approach but all failed...
Thanks a lot for your help.

Regards,
Eddie

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