Keyphrases
- relational databases
- database
- object oriented
- digital images
- databases
- watermarking scheme
- relational model
- normal form
- spread spectrum
- watermarking algorithm
- relational data
- fragile watermarking
- image authentication
- image watermarking
- copyright protection
- xml databases
- xml documents
- keyword search
- functional dependencies
- relational database systems
- sql queries
- digital watermarking
- information systems
- data mining
- multiscale
- image sequences
- metadata
- watermark embedding
- data sets