On Feb 29, 2012, at 7:52 AM, Eurico Chagas Filho wrote:
> But, when s%#^& happened i sometimes got a child w no parent, so i wonder
> if the rule is on the DB could this happen ?
> Now I will be using MySQL and it is a good time to revise concepts.
Another consideration: will there be more than one application that
will interact with the data? It's very difficult to ensure consistent rules
across all applications, so if the behavior is critical to the integrity of the
data, the enforcement should be at the database level.
-- Ed Leafe
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