ODBC And MSDE

Hello,

I'm not sure if it is right group for this question, but I hope that
I'll get help here...

I'm using MSDE to store data for my application. And I'm having such
problem. I'm creating a table in DB for string connection information:

CREATE TABLE sql (
action_id int NOT NULL default '0',
database_name varchar(20) NOT NULL default '',
username varchar(15) NOT NULL default '',
password varchar(15) NOT NULL default '',
PRIMARY KEY (action_id)
);

Field 'database_name' stands for the DB name used by ODBC (In my Java
application I'm using ODBC, to connect to particular DB). So when I'm
adding a record to this table, for instance:
1, "MySQL", "root", "password"
ODBC || MSDE || JDBC changes the values by adding free space to fill
all the field's spaces (Instead of "MySQL" it adds "MySQL
"). It seems like some component doesn't understand that I'm using
varchar(20), not char.

For instance, when I'm using MySQL DB server, such problem doesn't
introduce itself... Does anyone know how to manage this?

Thank you,
Audrius