SQL TYPE MAP such as SQL_CHAR, SQL_NUMERIC , etc

Hello,

May I know where I can find some online documents about mapping the
integer values to the following SQL types please?

For example, if I have value 1 , so that I know 1 is mapped to SQL_CHAR;
if I have value 3, so that I know 3 is mapped to SQL_NUMERIC.

Thanks a lot,
Emi

Data Types

The following data types are supported:

SQL_CHAR

SQL_VARCHAR

SQL_LONGVARCHAR

SQL_NUMERIC

SQL_DECIMAL

SQL_SMALLINT

SQL_INTEGER

SQL_REAL

SQL_FLOAT

SQL_DOUBLE

SQL_BIT

SQL_TINYINT

SQL_BIGINT

SQL_BINARY

SQL_VARBINARY

SQL_LONGVARBINARY

SQL_TYPE_DATE

SQL_TYPE_TIME

SQL_TYPE_TIMESTAMP

SQL_INTERVALS (all types)