Labels:text | screenshot | diagram OCR: FIGURE 1: Good clustering vs. poor clustering. Good clustering can reduce CPU time, elapsed times, disk I/O, and wasted space, because the order of the rows in the table follows the order of the index entries in the leaf blocks. Poor clustering makes retrieving data for a given key disorganized, and the associated rows for that key in the table may be scattered across many noncontiguous blocks. Good Clustering Poor Clustering Root Block (index) B-level Branch Block[s] [index) Leof Blocks (index) Data Blocks [table)
