[Database class] Left/right join algorithm

[Paul S. Wang]

Dear DB class,

In order to make things clearer,  I have placed
a left join algirithm in this page

http://dbdev.cs.kent.edu/database/notes/outer.html

Take a look.
Paul

-- 
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 Paul S. Wang (王士弘)                      Email: pwang at cs.kent.edu            
 Dept. of Computer Science, Kent State U.   Tel: (330) 672-9051
 Kent, Ohio, USA 44242-0001                 http://www.cs.kent.edu/~pwang/ 
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