Methods for Processing Disk Files
The methods of disk file processing include:
- Consecutive processing
- Sequential-by-key processing
- Random-by-key processing
- Sequential-within-limits processing.
- Relative-record-number processing
Table 1 shows the valid entries for positions 28, 34, and 35 of the file description specification for the various file types and processing methods. The subsequent text describes each method of processing.
| Processing Method | Limits |
Record |
File |
|---|---|---|---|
Externally Described Files |
|
|
|
Program Described Files |
|
|
|