Tree-like data relationships are common, but working with trees in SQL usually requires awkward recursive queries. This talk describes alternative solutions for modeling #hierarchical data that work for #MySQL, including:
* Adjacency List
* Path Enumeration
* Nested Sets
* Closure Table
Code examples will demonstrate using the Closure Table in PHP, and offer guidelines for choosing one design over another.
PRESENTER: Bill Karwin, Principal #MySQL Instructor on February 27, 2011.
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