@Entity
@SecondaryTable(name = "CLM", pkJoinColumns = @PrimaryKeyJoinColumn(name = "event_id", referencedColumnName = "event_id"))
public class Claim extends Event {
        private Date lossDate;
        private Set<ClaimDetail> claimDetails;

        @Column(table="CLM", name="clm_loss_date")
   public Date getLossDate() {
      return lossDate;
   }
   public void setLossDate(Date lossDate) {
      this.lossDate = lossDate;
   }

        @OneToMany(cascade = CascadeType.ALL, orphanRemoval=true, mappedBy="parentClaim")
   public Set<ClaimDetail> getClaimDetails() {
      return claimDetails;
   }
   public void setClaimDetails(Set<ClaimDetail> claimDetails) {
      this.claimDetails = claimDetails;
   }

@Entity
@Table(name="CLM_DTL")
public class ClaimDetail extends DomainObject{
        private ClaimDetailPk id;
        private Float billHours;
   private Double amount;

        @EmbeddedId
   public ClaimDetailPk getId() {
      return id;
   }
   public void setId(ClaimDetailPk id) {
      this.id = id;
   }
       @Column(name="clm_dtl_bill_hrs")
   public Float getBillHours() {
      return billHours;
   }
   public void setBillHours(Float billHours) {
      this.billHours = billHours;
   }
   @Column(name="clm_dtl_amt")
   public Double getAmount() {
      return amount;
   }
   public void setAmount(Double amount) {
      this.amount = amount;
   }

        @Embeddable
   @SuppressWarnings("PMD")
   public static class ClaimDetailPk implements Serializable {      
      private Long eventId;   
      
      @Column(name="event_id")
      public Long getEventId() {
         return eventId;
      }
      public void setEventId(Long eventId) {
         this.eventId = eventId;
      }
      
      @Override
      public int hashCode() {
         ....................
      }
      @Override
      public boolean equals(Object obj) {
         .........................
      }         
   }

CLM
----
EVENT_ID
CLM_LOSS_DATE

CLM_DTL
--------
EVENT_ID
CLM_DTL_AMT
CLM_DTL_BILL_HRS