https://doxygen.postgresql.org/compat__informix-sqlda_8c.html
PostgreSQL Source Code: src/interfaces/ecpg/test/expected/compat_informix-sqlda.c File Reference
https://www.ibm.com/docs/en/db2-for-zos/12.0.0?topic=sql-descriptor-area-sqlda
Db2 12 - Db2 SQL - SQL descriptor area (SQLDA)
An SQLDA is a collection of variables that is required for execution of the SQL DESCRIBE statement, and can be optionally used by the PREPARE, OPEN, FETCH,...
sqldescriptorarea