1. Objectives 4 Identify the meaning of software maintenance and it’s importance in the project life cycle 4 Understand why maintenance is needed

2. Objectives 4 Identify different types of maintenance 4 Explain in detail Adaptive maintenance

3. Software maintenance Activities of correction, enhancement, migration of software programs are collectively known as software maintenance Maintenance activities take up almost 60% of an organization’s effort

4. Why 60% of effort? 4 15-20 year old software in use in most places 4 Old software not developed using “good” programming techniques 4 Very little documentation

5. Why is maintenance required? 4 To incorporate user and business changes 4 To correct errors 4 To enhance software in line with current technology 4 To fine tune the system 4 To prevent future errors

6. Types of maintenance 4 Adaptive maintenance 4 Corrective maintenance 4 Perfective maintenance 4 Preventive maintenance

7. Adaptive maintenance Adaptive maintenance deals with making changes in the system or adapting the system because of changes in the environment or technology or user needs

8. Adaptive maintenance procedure 4 Request for service from user departments 4 Screening of service requests 4 Assignment of priority to service requests 4 Developing mini-systems for service requests

9. Housekeeping tasks 4 Backup & restoration 4 Purging & file reorganization 4 Index & directory reorganization 4 Reset procedures 4 Parameters update