McqMate
| Q. |
For a table having 4 columns, the number of columns to which hash function is applied when using hash indexes is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| Explanation: in mysql, for the hash indexes, a hash function is applied to each of the column values. the resulting hash values are stored in the index and used to perform lookups on it. | |
View all MCQs in
Information Retrival TechniquesNo comments yet