ANTISYMETRIC RELATIONS???

I am new to this newsgroup and this is my first posting. If this is not the proper place to post this inquiry, I would appreciate being informed of where it is.

 In an issue of Oracle magazine, dated Winter 1993, page 88, in an article by Hans J. Drucks named "Beyond the Relational Data Model", Mr. Druck refers several times to "antisymetrical relations". I know a little about relational theory. I know a little about object theory. Perhaps too little if this term does not fire any neurons in my brain.   Considering the possibility that everyone knows what he is talking about and I am a rube from hodunk, have pity on me and please inform me of what is the meaning of this term.
  One can assume that he is talking about certain aspects of the object model as defined in a relational matrix. I just don't know of any descriptive usage that uses the term "symetrical" in relational which can then be
turned around into "antisymetrical" when talking about object. I know someone will probably call me an idiot and ask just who am I and the donkey I road in on but have compassion and clue me in.

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