June 2010
Intermediate to advanced
328 pages
7h 51m
English
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How to Recognize the Antipattern
If the user interface or documentation for your project describes an attribute to which you can assign multiple values but is limited to a fixed maximum number of values, this might indicate that the Multicolumn Attributes antipattern is in use.
Admittedly, some attributes might have a limit on the number of selections on purpose, but it’s more common that there’s no such limit. If the limit seems arbitrary or unjustified, it might be because of this antipattern.
Another clue that the antipattern might be in use is if you hear statements such as the following:
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“How many is the greatest number of tags we need to support?”
You need to decide how many columns to define in the table for a multivalue attribute ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.