diff --git a/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHost.java b/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHost.java
index b5b024d..00dbcb0 100644
--- a/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHost.java
+++ b/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHost.java
@@ -67,6 +67,7 @@ public class DiscoveryHost {
 
 
     public DiscoveryHost(){}
+
     public DiscoveryHost(long ip, long mac){
         this.ip = ip;
         this.mac = mac;
diff --git a/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHostController.java b/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHostController.java
index b6c7e0d..170b8e0 100644
--- a/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHostController.java
+++ b/src/main/java/com/loafle/bridge/discoveryhost/DiscoveryHostController.java
@@ -1,7 +1,23 @@
 package com.loafle.bridge.discoveryhost;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.transaction.Transactional;
+
 /**
  * Created by root on 16. 11. 15.
  */
+@RestController
 public class DiscoveryHostController {
+
+    @Autowired
+    private DiscoveryHostRepository repository;
+
+    @RequestMapping(value ="/hostTest")
+    @Transactional
+    public void testHost() {
+
+    }
 }
diff --git a/src/main/java/com/loafle/bridge/discoveryhost/PortScanHistory.java b/src/main/java/com/loafle/bridge/discoveryhost/PortScanHistory.java
index bad096c..10a79c4 100644
--- a/src/main/java/com/loafle/bridge/discoveryhost/PortScanHistory.java
+++ b/src/main/java/com/loafle/bridge/discoveryhost/PortScanHistory.java
@@ -18,7 +18,7 @@ public class PortScanHistory {
     private long id;
 
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn
+    @JoinColumn(name = "HOST_ID", nullable = false)
     @JsonIgnore
     private DiscoveryHost host;
 
@@ -44,10 +44,10 @@ public class PortScanHistory {
     @Column(nullable = true)
     private String description;
 
-    @Column(nullable = true)
+    @Column(nullable = false)
     private Date startDate;
 
-    @Column(nullable = true)
+    @Column(nullable = false)
     private Date endDate;
 
     @Column(columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP", nullable = false, insertable = false, updatable = false)