2014HS: 13000/23000 Advanced Software Engineering

500 Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`cybercoach`.`subscriptions`, CONSTRAINT `FK_subscriptions_user` FOREIGN KEY (`user`) REFERENCES `users` (`id`)) Error Code: 1451 Call: DELETE FROM users WHERE (id = ?) bind => [1 parameter bound] Query: DeleteObjectQuery(ch.unifr.cybercoach.server.entities.UserEntity[ id=3829 ])