Match the following :
|
P. Primary index |
1. Dense index |
|
Q. Clustered Index |
2. Require unique values in the column |
|
R. Secondary index |
3. Multi-level index |
|
S. B/B+ tree index |
4. Requires physical reordering of the rows and they need not be unique |
1
P-2, Q-1, R-4, S-3
2
P-2, Q-4, R-1, S-3
3
P-2, Q-3, R-4, S-1
4
P-4, Q-2, R-3, S-1