ACUCOBOL users make direct application calls. See Enabling XDDOPEN, XDDCHECK, and XDDCLOSE for Programmatic SQL Conversion Error Checking.
A sample program using ACUCOBOL is provided (samples\acucobol\XDDcheck\xddchk.cbl). It shows how to write a simple COBOL program that takes advantage of this new functionality by performing a table scan to verify that all records can be converted to SQL. The sample is for ACUCOBOL only. It assumes that SQL conversion error checking has been enabled in the runtime as explained in Enabling XDDOPEN, XDDCHECK, and XDDCLOSE for Programmatic SQL Conversion Error Checking.