BOOLEAN data type

Informix^® supports the BOOLEAN data type, which can store 't' or 'f' values. Genero BDL implements the BOOLEAN data type in a different way: As in other programming languages, Genero BOOLEAN stores integer values 1 or 0 (for TRUE or FALSE). The type was designed this way to assign the result of a boolean expression to a BOOLEAN variable.

Oracle does not implement a native BOOLEAN type in SQL types. However, a BOOLEAN type exists in the PL/SQL language.

Solution

The Oracle database interface converts the BOOLEAN type to CHAR(1) columns and stores '1' or '0' values in the column.