The Adjacency List design might be just fine to support the work you need to do in your application. The strength of the Adjacency List design is retrieving the direct parent or child of a given node. It’s also easy to insert rows. If those operations are all you need to do with your hierarchical data, then Adjacency List can work well for you.
I wrote an inventory-tracking application for a computer data center. Some equipment was installed inside computers; for example, a caching disk controller was installed in a rackmount server, and extra memory modules were installed on the disk controller.
I needed an SQL solution to track the usage of hierarchical collections easily. But I also ...
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