Reload Analyzer Manual

Tandem Reload Analyzer Manual Page 22 of 42
Figure 1-3. A Disorganized File
The data blocks in Figure 1-3 are physically adjacent but are not logically contiguous.
That is, the next pointer from the first data block does not point to its adjacent block,
but points to a nonadjacent data block instead. The file lacks physical continuity and
proper space utilization. Physical discontinuity occurs when the physical order of the
data blocks does not match the blocks’ logical order.
This file also suffers from improper space utilization. This occurs when the index and
data blocks do not contain the optimal number of records. Notice that the amount of
free space in the blocks is not consistent throughout the file. For example, the second