Evaluation of the DSN software methodology

The effects of the DSN software methodology, as implemented under the DSN Programming System, on the DSN Mark 3 Data Subsystems Implementation Project (MDS) are described. The software methodology is found to provide a markedly increased visibility to management, and to produce software of greater reliability at a small decrease in implementation cost. It is also projected that additional savings will result during the maintenance phase. Documentation support is identified as an area that is receiving further attention.