Christian Ulrich wrote:
Multiple-fields-primary keys, for
example, I consider as a bad design. (I can imagine some
exceptions, but those are really rare)
Why ? I have at example an article table wher the primary key consists
of
article number + version + language
Why an primary key that consists of these 3 fields is not an good idea
??
Because if you want to use that article in order item table or a bill of
materials table, you need to add 3 fields as foreign key.
Vincent
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