I'm trying to wrap my head around how to structure some  data. And then 
execute queries that return a subset of the data (which, obviously, matches 
some criteria.)

For example, say I am a utility company that manages sewer and cable lines. 
 I have a DB of 500K homes, 2000K other residencies, substations, etc.  I 
also have connections going from home to home, home to buildings, ...to 
substations, etc...

Now, I need to be able to find all occurrences in the DB where 4 homes are 
in a (near) exact spatial relationship to each other (indicating one type 
of connection cable was probably used) and within a certain distance 
another (but different) exact configuration of things exists.

Ideally, I would to be able to cover as much as possible of the space with 
these various "Cookie-cutter" patterns.

Does that use-case make sense?
I have ways of brute forcing such things in SQL, but it is ugly.  It seems 
like Graph DBs would be a much better fit: distances can easily be a 
property on an edge, KD tree and other data structures could coexist with 
other structures, explorattory models could be spun up and down as needed...

If anyone could point me in the right direction I would really appreciate 
it.
Thanks
Chris Moses

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