Does normalization really hurt performance in high traffic sites?

Posted by Luke101 on Stack Overflow See other posts from Stack Overflow or by Luke101
Published on 2010-04-24T00:08:28Z Indexed on 2010/04/24 0:13 UTC
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Filed under:

sql-server-2008

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c#

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normalization

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denormalization

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Performance

I am designing a database and I would like to normalize the database. I one query I will joining about 30-40 tables. Will this hurt the website performance if it ever becomes extremely popular? This will be the main query and it will be getting called 50% of the time. The other queries I will be joining about 2 tables.

I have a choice right now to normalize or not to normalize but if the normalization becomes a problem in the future i may have to rewrite 40% of the software and it may take me a long time. Does normalization really hurt in this case? Should I denormalize now while I have the time?

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