Matthew Hixson wrote:
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.
You might find the "ltree" add-on in contrib useful. Look in the "contrib" directory of your source installation, or the addons/extras package of your distribution.
-- Richard Huxton Archonet Ltd