Yes, it's a 1-to-many relationship.where B has a compound primary key. say A's Primary Key is PK_A, B's Primary Key is (PK_A,ColB),where ColB is another column in Table B. The scenario like this: say table B's structure is like:(PK_A,ColB,ColB2) and we have a row of old data here in table B:(1000,9999,'abcd');where 1000 is a Pk in Table A which is referenced by table B. In A's EntityEJB ,the CMR setter is setBs(collection bs),when we tried to set a new collection with new data (1000,8888,'efgh') from A's EntityEJB with that setter, then after calling the setter,the result in DB is like:(1000,9999,'abcd') +(1000,8888,'efgh').the old one is still there The CMR getter seems to get them all. Any suggestions?
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