Re: Q about materialized paths

From: --CELKO-- <jcelko212_at_earthlink.net>
Date: 30 Sep 2004 16:53:42 -0700
Message-ID: <18c7b3c2.0409301553.33ca701a_at_posting.google.com>


>> Is it known who "invented" materialized path approach in modeling
hierarchical data with SQL? <<

I have no idea, but we had used linked list structure for decades in procedural languages and concatenation codes in Cobol just as long. Path enumeration was probably obvious and has a lot of inventors. Ben Gan and Moreau made it popular in their book. I made the nested sets model popular in my books. Dr. Codd has the first adjacency list model in one of his early papers that I know of. Received on Fri Oct 01 2004 - 01:53:42 CEST

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