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I've just been asked to look into adding constraints to a database (as
an alternative to triggers on the database, and exit programs on the
application).
Let's start with information about the types of constraints. What is the
business need? There are some constraints you're probably used to already
(though they go by a different name), such as UNIQUEness of a key. There
can be constraints that ensure that data is not orphaned (such as an order
record without a matching customer record) and so on. What type are we
talking about here?
Dennis Lovelady
http://www.linkedin.com/in/dennislovelady
--
"The problem with being punctual is that nobody's there to appreciate it."
-- Franklin P. Jones
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