Case-based thinking (CBR) is an encounter based way to deal with taking care of new issues by adjusting already fruitful answers for comparable issues. Tending to memory, picking up, arranging and critical thinking, CBR gives an establishment to another innovation of wise PC frameworks that can take care of issues and adjust to new circumstances. In CBR, the "savvy" reuse of information from effectively tackled issues, or cases, depends on the reason that the more comparable two issues are, the more comparative their answers will be.