[GENERAL] Adjacency Lists vs Nested Sets

[Matthew Hixson]

Does Postgres have any native support for hierarchical data storage?   
I'm familiar with the Adjacency List technique, but am trying to  
determine whether or not Nested Sets would make sense for our  
application or not.  I understand that Nested Sets might be better  
for high read applications, but write heavy applications suffer from  
poor performance.
  Any thoughts on the topic?
  -M@
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