Did You Know You Could Index SUM() and COUNT(): SQL Server Indexed Views, Part 3
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A friend of mine who owns a stock photo website once told me he had designed an awesome photo auto-tagging algorithm which was 80% correct: just tag all photos cats and have four hits out of five.
But seriously, how do we calculate most used tags on photos?
For those not familiar with different tagging models, I highly recommend this old but very useful article: Tags: Database schemas.
Now, in this tutorial, we'll use the toxi approach to tagging. Later in the article I'll explain why we would choose that approach over the others.
Let us create a simple schema which would allow us to store, tag and sell photos:
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