| Watermarking Techniques for Relational Databases: Survey, Classification and Comparison Recent countries visiting this post |  |
 | 11 | United States |
 | 3 | Italy |
 | 1 | |
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| Watermarking Techniques for Relational Databases: Survey, Classification and Comparison Recent countries visiting this post | |
| 11 | United States |
| 3 | Italy |
| 1 | |
| 1 | China |
| 1 | Russian Federation |