diff --git a/src/main/java/com/codesdream/ase/model/parent/Parent.java b/src/main/java/com/codesdream/ase/model/parent/Parent.java
index 7fb7617..4a1c72f 100644
--- a/src/main/java/com/codesdream/ase/model/parent/Parent.java
+++ b/src/main/java/com/codesdream/ase/model/parent/Parent.java
@@ -1,16 +1,12 @@
 package com.codesdream.ase.model.parent;
 
-import com.codesdream.ase.model.mark.Tag;
 import com.codesdream.ase.model.permission.User;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 
-import javax.annotation.Generated;
-import javax.persistence.*;
-import java.util.List;
+import javax.persistence.Entity;
 
 @Entity
-@Table
 @Data
 @EqualsAndHashCode(callSuper = false)
 public class Parent extends User {
diff --git a/src/main/java/com/codesdream/ase/repository/activity/ActivityRepository.java b/src/main/java/com/codesdream/ase/repository/activity/ActivityRepository.java
index c8d7d90..4d10e4f 100644
--- a/src/main/java/com/codesdream/ase/repository/activity/ActivityRepository.java
+++ b/src/main/java/com/codesdream/ase/repository/activity/ActivityRepository.java
@@ -1,7 +1,6 @@
 package com.codesdream.ase.repository.activity;
 
 import com.codesdream.ase.model.activity.Activity;
-import com.codesdream.ase.model.permission.User;
 import org.springframework.data.domain.Sort;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
@@ -14,10 +13,7 @@ public interface ActivityRepository extends JpaRepository<Activity, Integer> {
     List<Activity> findByTitle(String title);
     List<Activity> findByTitle(String title, Sort sort);
 
-    List<Activity> findByCreator(User creator);
-    List<Activity> findByCreator(User creator, Sort sort);
-
-    List<Activity> findByManager(User manager);
-    List<Activity> findByManager(User manager, Sort sort);
+    List<Activity> findByCreatorId(int creator);
+    List<Activity> findByCreatorId(int creator, Sort sort);
 
 }