Question : How do I calculate the slope of a line?

Now that I've got your interest...I want to determine and then isolate the middle linear part of this sigmoid function graph to determine the slope of the isolated middle line.

How do I do this?

Answer : How do I calculate the slope of a line?

There may be some performance tradeoffs since Oracle has the opportunity to pre-compile the view and the resulting execution plan is therefore more static.   But, IMHO, the larger issue is where you want to manage this "large" code object.  Storing it in a view puts it in the database where it is securable and dependencies are easier to track.  If there is a disadvantage to using views, then it simply the extra layer of complexity (one more "moving part"), but the isolation gained from that is also probably the greatest advantage.

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