Software Size Measurement Methodology Selection:
Care should be taken while selecting a methodology to use for the Functional Size Measurement. The methodology should be such that it measures all the major, relevant functionality on which the effort is required to be spent on development; otherwise – in case of measurement of only a small part of the software functionality – the significance of measurement is lost. The methodology should be simple and easy to use as well. Hence, there is a need of an integral software size measurement methodology which is presented in the FSSM book.
The following are some important facts that should be considered regarding the Functional Size Measurement, and methodologies to measure the functional size: