I encounted two ejb question as follows: 1, I have a table which has some fields must to be "not null", and this table has a primary key. when I make a CMP ejb from this table, the ejb has a ejb_create method with only one parameter(the primary key). so the question is when I use the ejb_create method to create a record, what will happen to those "not null" fields? or I must modify the ejb_create method. 2, I have another table with has a Clob field, because Clob is too boring, I want to change it to the String type, in JBuilder, it's quite simple. but I don't know if this will works well. any help is appricate.