| Keyword | CPC | PCC | Volume | Length string | Score |
|---|---|---|---|---|---|
| worldcat database | 1.99 | 0.8 | 7080 | 17 | 25 |
| worldcat library database | 0.23 | 0.5 | 4066 | 25 | 44 |
| is worldcat a research database | 0.96 | 0.2 | 9937 | 31 | 66 |
| what type of database is worldcat | 0.61 | 0.8 | 1001 | 33 | 70 |
| the worldcat is a database maintained by | 0.13 | 0.8 | 4414 | 40 | 82 |
