[Tagdb] just a small note about "related" notation ...

[Nitin Borwankar]

Jeremy Dunck commented about notation for related queries, on my last 
blog post,  ( 
http://tagschema.com/blogs/tagschema/2005/10/many-dimensions-of-relatedness-in.html 
).
I commented and said "stay tuned ...".

This is a quick note to mention that while researching the subject a 
little more I realized the following.

While trying to *invent* a whole new notation - we maybe reinventing 
relational algebra -  
http://www.reference.com/browse/wiki/Relational_algebra - the formal 
notation that expresses the basic operations in the relational model - 
http://www.reference.com/browse/wiki/Relational_model.

Reminded me of my days in undergraduate mathematical logic and set 
theory ....

So .....  given enough time I will try to rephrase all the operations in 
my blog post in  this language ....
Or .....  someone on the list comfortable with mathematical logic and 
set  theory might want to take this as an exercise and contribute to the 
list .....

Nitin Borwankar