Keyphrases
- software maintenance
- open source projects
- software projects
- software evolution
- software development
- source code
- effort estimation
- reverse engineering
- software engineering
- software systems
- maintenance activities
- software engineers
- software development life cycle
- database
- object oriented systems
- cooperative
- program comprehension
- case study
- regression testing
- process model
- data model
- multi agent
- database systems
- high level
- real world