International Journal of Computer Applications
The great development of computer technologies and the Internet have made duplication and distribution of digital information simpler. This leads to a need for effective copyright protection tools. Watermarking database system is considered a vital technique for copyright protection of database systems. In this paper, the proposed system is a robust technique to embed and detect watermark in a relational database. In the embedding watermarking stage the watermark is embedded in non numeric attributes for preserving the query results, then is compressed the database for increasing the transfer rate.