Characteristics of application software maintenance

@article{Lientz1978CharacteristicsOA,
  title={Characteristics of application software maintenance},
  author={Bennet P. Lientz and E. Burton Swanson and G. E. Tompkins},
  journal={Commun. ACM},
  year={1978},
  volume={21},
  pages={466-471}
}
Maintenance and enhancement of application software consume a major portion of the total life cycle cost of a system. Rough estimates of the total systems and programming resources consumed range as high as 75-80 percent in each category. However, the area has been given little attention in the literature. To analyze the problems in this area a questionnaire was developed and pretested. It was then submitted to 120 organizations. Respondents totaled 69. Responses were analyzed with the SPSS… 
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