Archive for September 25th, 2009
Adjacency list vs. nested sets: SQL Server
Continuing the series:
What is better to store hierarchical data: nested sets model or adjacency list (parent-child) model?
For detailed explanations of the terms, see the first article in the series:
Now, let's see what's better for SQL Server.
We will create a single table that holds both adjacency list data and nested sets data, with 8 levels of nesting, 5 children of each parent node and 2,441,405 records:
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