> Anyway, in the third case, would it be possible to implement a more
> general 'boolean checking' such as
> bool b = "YyTt1Oo".indexOf(value.charAt(0))!=-1; ?

It is quite ok, if the column containing the data can be casted to
CHAR(1). What do we do with other (for example, CHAR(5)
containing 'true' and 'false')? And how to specify the backward
conversion in PreparedStatement.setBoolean(...) if the column in CHAR
(5)?

I'm really interested in your opinion.

Best regards,
Roman Rokytskyy