The purpose of this paper is to introduce the use of an object-oriented methodology called TAD in the field of business process reengineering. TAD methodology consists of six phases and uses several tables to represent the real world of the enterprise. The first and second phases deal with identifying the reality of the system. The third phase focuses on carrying out business process reengineering in order to create a competitive and successful enterprise. The last three phases are used to develop the information system of the reengineered organization. A problem of Sales-Claim is used as an example to implement the concept of this methodology. As a result of this work we found that TAD methodology is very useful in identifying and implementing changes in the functioning and structural scheme of an enterprise.