You'd better choose a binary field (blob).
But the most common way to serialize an object is defining
a field in your table for each atribute of your class.
For example:
class Person{
private int id;
private
String name;
// getters and setters
}
In your database:
CREATE TABLE Person(
id int not null primary key,
name varchar(50) NOT NULL );
You can use Hibernate in your application to do all the mappings and persist
your objects.