%0 Journal Article
%T Research on Watermarking Relational Database Based on Character Field<br>基于汉字字段的关系数据库数字水印研究
%A WANG Tang
%A CAO Bao-xiang
%A LU Xiao-feng
%A YANG Yi-xian
%A NIU Xin-xin
%A <br>王堂
%A 曹宝香
%A 芦效峰
%A 杨义先
%A 钮心忻
%J 计算机科学
%D 2011
%I 
%X An innovative practical watermarking scheme for relational database based on character field was proposed in this paper. Identifying the target attribute values through the primary key, set of user keys and the span of watermark.Calculating the characteristics of attribute values and the watermark according to the defined rules and choosing those different bits as watermark bits. Semantic analysis gives a character, which is non-down structure and one of the most relevant attributes in the domain,and watermark embedding is the process of editing(insert/delete) the character. The embedded watermark is invisible and does not affect the availability of the database, and enables the blind extraction.The proposed scheme can achieve good excellent robustness to common database update such as insert, delete, modify and delete database fields.
%K Relational database
%K Digital watermarking
%K Structure of Chinese characters
%K Semantic analysis
%K Majority vote<br>关系数据库，数字水印，汉字字型结构，语义分析，多数投票
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=17DDCED190714E79B5D308784CE5B769&yid=9377ED8094509821&vid=16D8618C6164A3ED&iid=59906B3B2830C2C5&sid=F1177A9DF1349B63&eid=C49E20B13C5D71A0&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=0