The following limits exist for the DBMaker protocol:
Maximum indexed key size 1024
Maximum number of columns per key - 16
Maximum number of columns - 252
Maximum length of a char field 3992 bytes
To achieve the same sort or retrieval sequence under DBMaker as under the
Vision file system, place a BINARY directive immediately before each key field that
contains signed numeric data. High values and low values can cause problems
in key fields.
With the interface, a maximum of 57 database tables can be open at one time by
a single process.
Other limits are described in Appendix B of the ACUCOBOL-GT documentation.