A Fragile Zero Watermarking Scheme to Detect and Characterize Malicious Modifications in Database Relations

Table 15

Characterization of malicious deletion attacks on range of data values.

Range	𝑟𝑘	𝑟𝑓𝑟𝑘	𝑓𝑟𝑘	𝑟𝑓𝑟𝑘^′	𝑓𝑟𝑘^′	Δ𝑓𝑟𝑘	Δℱ𝑟𝑘	Characteristic
0	0–99	25.59	1436986	29.12	1436986	0	0	No change
1	100–999	48.73	2736731	41.65	2054875	−681856	−24.92%	↓ High to Low
2	1000–9999	25.68	1442223	29.23	1442223	0	0	No change