Karoly Szantai wrote:
Hello,
I have a Category entity. Each Category has zero or more
subcategories, which are ordered. There is a root Category (called
main category) which has no parent.
There's a guy named Joe Celko who has a bunch of suggestions on how to
do trees in relational databases. You may want to take a look at his
algorithms.
Other than that, is the ordering a user-ordering or a tree-ordering?
That is, is the order for organizing the display or some characteristic
of the tree?
-arturo
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