<p>The primary goal of database security is to establish data ownership by identifying the original creator of the data. It is especially crucial when it comes to electronic data since those sets are frequently altered and duplicated without giving due credit or acknowledgment to the original data source. Nowadays, to protect the database, watermarking systems are developed. Even though protecting relational databases using a watermarking system is challenging. Therefore, in this paper, an efficient watermarking system is developed to protect the relational database from data loss. The suggested system involves three phases such as optimal position selection, embedding, and extraction. Here, at first, for embedding, the optimal position of the relational database is selected using the Osprey with BAT optimization (OBO) algorithm. The proposed OBO algorithm is a combination of osprey optimization (O²) and the BAT algorithm. After position selection, we embed the watermark bit into the database. Then, the extraction process is carried out. Here, we used different embedding and extraction strategies for both numerical and non-numerical data. The efficiency of an introduced watermarking system is analyzed based on Mean square error (MSE) and Normalized correlation (NC). The experimental results show that the proposed watermarking system attained better results compared to other methods.</p>