The digital watermarking of the relational database can be easi ly destroyed by database general operations,so a robust method is necessary to detect it.

• 关系数据库数字水印容易被数据库的常规操作破坏,但通过采用汉明码和多数选举相结合的纠错方法可以提高水印的检测率,比单纯的汉明码纠错效果要好。