Metadata of database based pre-process for watermarking

Metadata has been widely applied to standardize information format so that the information exchange can be simplified inter various platforms. For Data-projects the definition of database scheme and criterions are specified with Metadata. Database watermarking technique has developed speedily in the current decade, sorts of algorithms have been proposed. This paper proposed a pre-process model of database watermarking based on Metadata. This model contains the important paramaters, by those the effectiveness and robustness of the watermark algorithm should be improved.