diff --git a/src/main/java/com/loafle/overflow/module/sensor/model/Sensor.java b/src/main/java/com/loafle/overflow/module/sensor/model/Sensor.java
index 8c543d6..7e1f600 100644
--- a/src/main/java/com/loafle/overflow/module/sensor/model/Sensor.java
+++ b/src/main/java/com/loafle/overflow/module/sensor/model/Sensor.java
@@ -3,6 +3,8 @@ package com.loafle.overflow.module.sensor.model;
 import com.loafle.overflow.meta.model.MetaCrawler;
 import com.loafle.overflow.meta.model.MetaSensorStatus;
 import com.loafle.overflow.module.target.model.Target;
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -61,6 +63,7 @@ public class Sensor {
     }
 
     @ManyToOne
+    @OnDelete(action = OnDeleteAction.CASCADE)
     @JoinColumn(name = "TARGET_ID", nullable = false)
     public Target getTarget() {
         return target;
diff --git a/src/main/java/com/loafle/overflow/module/sensor/model/SensorItem.java b/src/main/java/com/loafle/overflow/module/sensor/model/SensorItem.java
index 9ca3145..51823ed 100644
--- a/src/main/java/com/loafle/overflow/module/sensor/model/SensorItem.java
+++ b/src/main/java/com/loafle/overflow/module/sensor/model/SensorItem.java
@@ -1,6 +1,8 @@
 package com.loafle.overflow.module.sensor.model;
 
 import com.loafle.overflow.meta.model.MetaSensorItem;
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -28,6 +30,7 @@ public class SensorItem {
 
     @ManyToOne
     @JoinColumn(name = "SENSOR_ID", nullable = false)
+    @OnDelete(action = OnDeleteAction.CASCADE)
     public Sensor getSensor() {
         return this.sensor;
     }
diff --git a/src/main/java/com/loafle/overflow/module/target/model/Target.java b/src/main/java/com/loafle/overflow/module/target/model/Target.java
index 91e6c89..c758ee7 100644
--- a/src/main/java/com/loafle/overflow/module/target/model/Target.java
+++ b/src/main/java/com/loafle/overflow/module/target/model/Target.java
@@ -2,6 +2,8 @@ package com.loafle.overflow.module.target.model;
 
 import com.loafle.overflow.module.infra.model.Infra;
 import com.loafle.overflow.module.probe.model.Probe;
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -40,6 +42,7 @@ public class Target {
 
     @ManyToOne
     @JoinColumn(name = "PROBE_ID", nullable = false)
+    @OnDelete(action = OnDeleteAction.CASCADE)
     public Probe getProbe() {
         return probe;
     }
diff --git a/src/main/resources/init.sql b/src/main/resources/init.sql
index 70fea7d..9b2079c 100644
--- a/src/main/resources/init.sql
+++ b/src/main/resources/init.sql
@@ -275,7 +275,7 @@ INSERT INTO public.sensor (id,crawler_input_items,create_date,description,crawle
 INSERT INTO public.sensor (id,crawler_input_items,create_date,description,crawler_id,status,target_id) VALUES (
 2,NULL,'2017-06-26 20:19:07.074','My sensor',1,1,1);
 
-INSERT INTO public.sensor_item (id,create_date,item_id,sensor_id) VALUES (
+INSERT INTO public.sensor_item (id,create_date,item_id,sensor_id) VALUES (
 1,'2017-06-26 20:21:16.626',1,1);
 INSERT INTO public.sensor_item (id,create_date,item_id,sensor_id) VALUES (
 2,'2017-06-26 20:21:50.988',2,2);
\ No newline at end of file
diff --git a/src/test/java/com/loafle/overflow/module/target/dao/TargetDAOTest.java b/src/test/java/com/loafle/overflow/module/target/dao/TargetDAOTest.java
index 769b124..edf252a 100644
--- a/src/test/java/com/loafle/overflow/module/target/dao/TargetDAOTest.java
+++ b/src/test/java/com/loafle/overflow/module/target/dao/TargetDAOTest.java
@@ -16,7 +16,6 @@ import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import java.util.Date;
 import java.util.List;
 
-@Ignore
 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(classes = {AppConfig.class, JdbcConfiguration.class})
 public class TargetDAOTest {
@@ -25,6 +24,7 @@ public class TargetDAOTest {
     private TargetDAO repo;
 
     @Test
+    @Ignore
     public void create() {
         Target t = new Target();
         t.setCreateDate(new Date());
@@ -43,6 +43,7 @@ public class TargetDAOTest {
     }
 
     @Test
+    @Ignore
     public void list() {
 
         Probe p = new Probe();
@@ -51,5 +52,11 @@ public class TargetDAOTest {
         Assert.assertNotNull(list);
     }
 
-
+    @Test
+    @Ignore
+    public void delete() {
+        Target t = new Target();
+        t.setId(1);
+        repo.delete(t);
+    }
 }
\ No newline at end of file