Nonreplicated Static Data Allocation in Distributed Databases Using Biogeography-Based Optimization

Table 2

Minimum and average cost achieved by GA and BBO for 4 Sites.

Number; of fragments	G.A.		BBO
	Minimum cost	Average cost	Minimum cost	Average cost
4	409010	409010	409010	409010
6	693420	693420	693420	693470
8	921810	921810	92810	923487
10	1.4887𝑒+6	1.4887𝑒+6	1.4887𝑒+6	1.4905𝑒+6
12	1.8345𝑒+6	1.8361𝑒+6	1.8345𝑒+6	1.8374𝑒+6
16	2.5841𝑒+6	2.5869𝑒+6	2.5841𝑒+6	2.5887𝑒+6
20	2.7861𝑒+6	2.7905𝑒+6	2.7855𝑒+6	2.7912𝑒+6
24	3.2696𝑒+6	3.2881𝑒+6	3.2622𝑒+6	3.2983𝑒+6