This time, this is a review of the Sharp Commerce application. Again, I have stumbled upon the application by pure chance, and I have very little notion about who wrote it.

You might have wondered why I named this blog series the way I did, I named it because of the method outline below. Please note that I had to invent a new system to visualize the data access behavior on this system:

• In red, we have queries that are executed once: 3 queries total.
• In aqua, we have queries that are executed once for each item in the order: 2 queries per each product in the order.
• In purple, we have queries that are executed once for each attribute in each of the products in the order: 1 query per attribute per product in the order.

Now, just to give you some idea, let us say that I order 5 items, and each item have 5 attributes…

We get the following queries:

• 3 queries – basic method cost
• 10 queries – 2 queries per each product
• 25 queries – 1 query for each attribute for each product

Totaling in 38 queries for creating a fairly simple order. After seeing this during the course review of the application, I have used that term for this method, because it is almost too easy to make those sort of mistakes.