The unified modeling of product identification

Similar product identifications with different brands focus on different aspects, and there are different coding methods of product identification, which brings inconvenience to the data storage and representation during integrating the data from various data sources and increases the difficulty of data query. This paper proposes a data dictionary based XML to define a storage format, which can be extendable as needed; and develops a unified encoding model in XML, which is illustrated by the example of the refrigerator, and defines the parameters concerned by consumers.