There is a N-N mapping (many to many mapping) between ISO 9001:2000 and CMMI[1]. N-N mappings are usually more reasonable than 1-1 mapping (one to one mapping) especially in comparing standards. But, it is not practical in the field, because when CMMI is implemented in an organization, changes in processes of the organization must be reflected in quality manual as it is a prerequisite in ISO 9001:2000. When reflecting changes in quality manual, N-N mapping may cause some confusion. It is not easy to decide where to place these changes in quality manual by using N-N mapping. A mapping close to 1-1 mapping (Later, we call it “concise N-N mapping”) would, thus, be helpful in decision making.
A simple mapping between standards is not sufficient. This mapping can be complemented by additional descriptions. There are some delicate differences between ISO 9001:2000 and CMMI in terms of context. Therefore, the mapping must be explained by some description on the detailed difference between ISO 9001:2000 and CMMI.
Once an organization has achieved ISO registration by satisfying the necessary requirements of ISO 9001:2000, it is relatively simple to implement ISO 9004:2000 to achieve further improvements, because ISO 9004:2000 has been developed as a complementary guideline for ISO 9001:2000 and thus share similar structures with respect to assisting their application as a consistent pair.
In the same context, if there is a superset of ISO 9001:2000 and CMMI in the structure of ISO 9001:2000, it will be easy to introduce CMMI into the organization with ISO registration.
In this paper, we present an ISO 9001:2000 and CMMI integrated model constructed in ISO 9001:2000 structure, in which the interpretation of NN mapping is clearly described to eliminate confusion. Additionally, the integrated model provides an explanation of the differences between ISO 9001:2000 requirements and the practices of CMMI.
This paper is organized as follows. Section 2 briefly explains ISO 9001:2000 and CMMI. Section 3 presents an integrated model of ISO 9001:2000 and CMMI. Section 4 discusses related work and finally, Section 5 provides some conclusions.