To determine the numerator of the programming quality ratio, software testers “simply” count the number of programming defects found at some point in time in the software development life cycle.  Suppose for this presentation we assume the number of defects found are at systems testing.

To determine the value for the denominator, we need a way to measure the size of software so that we can determine how large the software application is. 

The size of software can be broken down into two categories.

Amount of Data Processing Capacity

• The amount of flow and storage of data in the application.
• The amount of “functionality.”
• Measured by “function points.”

Amount of Other Types of Programming

• The amount of “non-functionality.”
• Measured by the Software Non-functional Assessment Process (“SNAP points”).

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