IDXFORMAT

The IDXFORMAT option specifies the format to use when creating indexed files.

Syntax:
IDXFORMAT=integer
Parameters:
0 Default format for the operating system. For Net Express this is equivalent to format 3. For Server Express this is equivalent to format 1 for fixed-length files and format 3 for variable-length files.
1 C-ISAM
3 Micro Focus default indexed file format
4 Optimized format for fast duplicate key handling
5
Net Express Btrieve with ANSI conformance
Server Express Reserved
6
Net Express Btrieve without ANSI conformance
Server Express Reserved
8 Large indexed file format
Properties:
Default: 3
Comments:

The duplicate occurrence value is a unique identifier, which is added to the key, which has duplicates in order to make it unique. When a new key is added, where keys of the same value exist, then the occurrence value of the last added key is incremented by one and used for the newly added key. If keys are deleted, no change is made to the keys, which are not deleted and so if the highest occurrence of the series of duplicates is not deleted, then the highest value does not change. If the highest occurrence is deleted, then the highest occurrence value reduces to the next lower still existing occurrence value.