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WSQM TC, an OASIS technical committee for web service quality model, published the Web services quality model (WSQM) which models and explains the quality factor, quality action, and quality associates for Web services. WSQM focuses on the classification and definition of quality factors and activities of associates conceptually. As the coverage of Web services expands and implementation cases of them increase, the importance of the method which applies the quality model to real world practically grows up to make it easy communicating the information of quality of Web services. This research report presents the method describing the quality factors of Web services and SOA normally and quantitatively. For this, we adopt the standard XML schema as the framework for describing Web services quality. This report provides briefly the WSQM which is basis of WSQDL (Web Services Quality Description Language) and explains the considerations, the concept of quality chain, the overall structure of WSQDL, and items of WSQDL. The followings are the summary of the report.