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說，我有兩個（或三個）的表。JPA繼承和複合主鍵延伸
PLAYER_POINT
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PLAYER_ID | PK, FK -> PLAYER
POINT_ID | PK, FK -> POINT
EARNED | INT
PLAYER_POINT_YEAR
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PLAYER_ID | PK, FK -> PLAYER_POINT
POINT_ID | PK, FK -> PLAYER_POINT
YEAR | PK
EARNED | INT
PLAYER_POINT_MONTH
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PLAYER_ID | PK, FK -> PLAYER_POINT_YEAR
POINT_ID | PK, FK -> PLAYER_POINT_YEAR
YEAR | PK, FK -> PLAYER_POINT_YEAR
MONTH | PK
EARNED | INT
JPA是否可以使用@Inheritance擴展複合主鍵集？
的可能重複[JPA：是有可能改變的PKS在繼承層次？（http://stackoverflow.com/questions/5744822/jpa-is-it-possible -to-變化的-PKS-在-的繼承層次結構） – ali 2013-08-15 16:32:47