//@Column(name="CARD_ID")
    private Long cardId;

        <property name="namingStrategy">
            <bean class="org.hibernate.cfg.DefaultNamingStrategy" />
        </property>

@Entity
@Table(name = "LEGAL_PERSONS")
public class LegalPerson {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO, generator = "G1")
    @SequenceGenerator(name = "G1", sequenceName = "SQ_LEGAL_PERSONS")
    @Column(name="LEGAL_PERSONS_ID")
    private Long legalPersonsId;
    //@Column(name="CARD_ID")
    private Long cardId;
    public LegalPerson() {
    }


    public LegalPerson(Long cardId) {
        this.cardId = cardId;
    }

    public LegalPerson(Long legalPersonsId, Long cardId) {
        this.legalPersonsId = legalPersonsId;
        this.cardId = cardId;
    }

    public Long getLegalPersonsId() {
        return legalPersonsId;
    }

    public void setLegalPersonsId(Long legalPersonsId) {
        this.legalPersonsId = legalPersonsId;
    }

    public Long getCardId() {
        return cardId;
    }

    public void setCardId(Long cardId) {
        this.cardId = cardId;
    }
}

        <property name="namingStrategy">
            <bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
        </property>