CAJ | 학술논문

在现有关系型数据库水印算法的基础上，提出一种基于数值型和非数值型的数据库水印算法。以主键、列、时间信息组成一个三元组水印矩阵，将该水印矩阵嵌入到允许冗余操作的属性中。该方案的实施准确定位了属性值的同时，也标记了属性的时间信息。实验结果表明，该算法对属性的篡改、元组的添加、删除具有很好的鲁棒性。
재현유관계형수거고수인산법적기출상，제출일충기우수치형화비수치형적수거고수인산법。이주건、렬、시간신식조성일개삼원조수인구진，장해수인구진감입도윤허용여조작적속성중。해방안적실시준학정위료속성치적동시，야표기료속성적시간신식。실험결과표명，해산법대속성적찬개、원조적첨가、산제구유흔호적로봉성。
According to existing relational database watermarking algorithms, we propose a database watermarking algorithm which is based on numerical and non-numerical types.It forms a three tuple watermark matrix consisting the primary key, column and time information.The watermarks matrix is embedded into the attribute of allowable redundant operation.In implementation of the algorithm, while the attribute value is accurately located, the time information of the attribute is also marked.Experimental results show that the algorithm has good robustness against the operations of attribute tampering, tuple insertion and deletion.