BOOLEAN data type

Informix®

Informix supports the BOOLEAN data type, which can store 't' or 'f' values.

Genero BDL implements the BOOLEAN data type in a different way: A BOOLEAN variable stores integer values 1 or 0 (for TRUE or FALSE). This type is designed to hold the result of a boolean expression.

Oracle® MySQL and MariaDB

MySQL supports the BOOLEAN type name as an alias for the built-in TINYINT(1) data type.

Colums defined as BOOLEAN or TINYINT(1) can store 1 or 0 integer values for TRUE and FALSE.

Solution

The MySQL and MariaDB database interfaces support the BOOLEAN data type and stores 1 or 0 values in the column.

The BOOLEAN type translation can be controlled with the following FGLPROFILE entry:
dbi.database.dsname.ifxemul.datatype.boolean = { true | false }
For more details see IBM Informix emulation parameters in FGLPROFILE.