International Journal of Computer Applications
As information hiding, the digital watermark techniques have been attracting more interests in both research and industrial fields. Relational database is widely used in many information systems, as a tool for storing and managing a data. Major issue to protect the copyright of relational data. In order to make watermarking information more intuitive and easier to identify and to give authorization to the database this idea has been proposed. Ownership verification of a database by inserting an imperceptive watermark in such a way to provide robustness and security against attempts to remove the watermark.