Examples of "when is good idea implement many-to-many relationships"?

Posted by panchicore on Stack Overflow See other posts from Stack Overflow or by panchicore
Published on 2009-08-19T00:38:45Z Indexed on 2010/04/02 0:13 UTC
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Filed under:

database

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database-design

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web2.0

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many-to-many

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deeper-understanding

I ask this because need to understand/explain better with examples.

clasical examples like: an Article can be published in multiple Publication objects, and a Publication has multiple Article objects. (source)

I see is usefull for web2.0 for sharing features.

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