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To: cs551@merlot.usc.edu
Subject: Re: 551- MED
Date: Tue, 21 Oct 2008 22:55:46 -0700
From: Bill Cheng <william@bourbon.usc.edu>

Someone wrote:

  > Lec 11:
  > Slide 39 (Policy 3 MED) says:
  > MED is Optional, non-transitive attribute.
  > 
  > Slide 48 (UPDATE Message Handling) says:
  > Unrecognized, optional, non-transitive attributes are ignored. - This
  > includes MED right?

No, because MED is not unrecognized.

  > Slide 49 (Decision Process) says:
  > Apply MED - Didn't we ignore MED in slide 48?

--
Bill Cheng // bill.cheng@usc.edu <URL:http://merlot.usc.edu/william/usc/>