From: Secure big data ecosystem architecture: challenges and solutions
Database | 1st filtration | 2nd filtration | 3rd filtration | Studies selected | Percent selected |
---|---|---|---|---|---|
IEEE Xplore | 51 | 31 | 26 | 25 | 31.6% |
ProQuest | 45 | 39 | 31 | 27 | 34% |
Google Scholar | 39 | 35 | 14 | 11 | 14% |
Science Direct | 25 | 17 | 15 | 13 | 16% |
Scopus | 15 | 13 | 6 | 3 | 3.7% |
Total | 175 | 135 | 92 | 79 | 100 |