An Advanced Watermarking Technique on Relational Database

Abstract

Abstract-Growth in the information technology is playing an increasing role in use of information systems having relational databases. These relational databases are used very effectively in the computer environments for information extraction. They are exposed to security threats concerned by the ownership rights. Watermarking is used to enforce ownership rights about the shared relational data and for providing a means of tackling data tampering. When ownership rights are applied using watermarking, the underlined data undergoes certain modifications, as a result of which the data quality gets no attention. The reversible watermarking technique is employed to ensure data quality along with the recovery of the database. Such techniques are usually not robust against attacks and do not provide any method to select and apply a watermark on a particular attribute by taking into the picture its part in knowledge discovery. Hence the reversible watermarking is required that ensures the watermark encoding and decoding by accounting for the act of all the features in knowledge discovery. A robust and reversible watermarking (RRW) technique for the numbers relational data has been proposed that corresponds to the above objectives. Researches prove the effectiveness of reversible and robust watermarked technique against malicious attacks and shows that the proposed technique outperforms present ones.