Find a web site that site that discusses set operations in Oracle.    Post a link to the site that can be used by your colleagues to visit the site and write a sentence or two explaining the value of that sight in this course.  Once a colleague of yours uses a site, you cannot use that link and expect to receive participation credit for a repeated link.

My website:

http://www.cs.nott.ac.uk/TSG/manuals/databases/oracle/standard/server.815/a67779/operator.htm#998229

Classmates websites:

http://www.oreilly.com/catalog/mastorasql/chapter/ch07.html

http://www.dbforums.com/t807230.html

http://docs.rinet.ru/Krikun/oun01fi.htm#I8

http://www.dcnicn.com/PLSQL/BlockA/Lesson6A/notes.htm

http://www.prongs.org/linux/oracle/#70

http://www.dbazine.com/celko2.html

http://www.engin.umich.edu/caen/technotes/oracletut.pdf

http://sqlzoo.net

http://www.w3schools.com/sql/sql_select.asp

http://oldweb.uwp.edu/academic/mis/baldwin/orasql.htm

http://www.theparticle.com/cs/bc/dbsys/sql2.pdf

http://www.oracle.com/technology/oramag/oracle/03-sep/o53plsql.html

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