diff --git a/pom.xml b/pom.xml
index 5fc1000..b77896c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,17 +54,6 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-thymeleaf</artifactId>
 		</dependency>
-		<!-- QueryDSL APT Config -->
-		<dependency>
-			<groupId>com.querydsl</groupId>
-			<artifactId>querydsl-apt</artifactId>
-			<scope>provided</scope>
-		</dependency>
-		<!-- QueryDSL JPA Config -->
-		<dependency>
-			<groupId>com.querydsl</groupId>
-			<artifactId>querydsl-jpa</artifactId>
-		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/src/main/java/com/security/basic/configure/JpaConfiguration.java b/src/main/java/com/security/basic/configure/JpaConfiguration.java
deleted file mode 100644
index a1bd5fb..0000000
--- a/src/main/java/com/security/basic/configure/JpaConfiguration.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.security.basic.configure;
-
-import com.querydsl.jpa.impl.JPAQueryFactory;
-import javax.persistence.EntityManager;
-import javax.persistence.PersistenceContext;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
-
-@Configuration
-@EnableJpaAuditing
-public class JpaConfiguration {
-
-  @PersistenceContext
-  private EntityManager em;
-
-  @Bean
-  public JPAQueryFactory jpaQueryFactory () {
-    return new JPAQueryFactory(em);
-  }
-}
diff --git a/src/main/java/com/security/basic/mapped/BaseItem.java b/src/main/java/com/security/basic/mapped/BaseItem.java
deleted file mode 100644
index 0120adc..0000000
--- a/src/main/java/com/security/basic/mapped/BaseItem.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.security.basic.mapped;
-
-import javax.persistence.*;
-
-@MappedSuperclass
-public abstract class BaseItem {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name = "id", nullable = false)
-    private Long id;
-
-    @Column(name = "name", nullable = false)
-    private String name;
-}
diff --git a/src/main/java/com/security/basic/mapped/BaseItemRepository.java b/src/main/java/com/security/basic/mapped/BaseItemRepository.java
deleted file mode 100644
index 118f4db..0000000
--- a/src/main/java/com/security/basic/mapped/BaseItemRepository.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.security.basic.mapped;
-
-import com.querydsl.core.types.Projections;
-import com.querydsl.jpa.impl.JPAQueryFactory;
-import lombok.RequiredArgsConstructor;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-
-@RequiredArgsConstructor
-@Repository
-public class BaseItemRepository {
-
-    private final JPAQueryFactory queryFactory;
-
-    com.security.basic.mapped.QBaseItem qItemA = com.security.basic.mapped.QItemA.itemA._super;
-    com.security.basic.mapped.QBaseItem qItemB = com.security.basic.mapped.QItemB.itemB._super;
-
-    public List<ItemDto> itemAList() {
-        return queryFactory.select(Projections.constructor(ItemDto.class,
-                        qItemA.id,
-                        qItemA.name
-                ))
-                .from(qItemA)
-                .fetch();
-    }
-
-    public List<ItemDto> itemBList() {
-        return queryFactory.select(Projections.constructor(ItemDto.class,
-                        qItemB.id,
-                        qItemB.name
-                ))
-                .from(qItemB)
-                .fetch();
-    }
-}
diff --git a/src/main/java/com/security/basic/mapped/Controller.java b/src/main/java/com/security/basic/mapped/Controller.java
deleted file mode 100644
index 554e9d0..0000000
--- a/src/main/java/com/security/basic/mapped/Controller.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.security.basic.mapped;
-
-import lombok.RequiredArgsConstructor;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-@RequiredArgsConstructor
-@RequestMapping("/mapped")
-public class Controller {
-
-    private final BaseItemRepository baseItemRepository;
-
-    @GetMapping("/a")
-    public ResponseEntity<?> a() {
-        return ResponseEntity.ok(baseItemRepository.itemAList());
-    }
-
-    @GetMapping("/b")
-    public ResponseEntity<?> b() {
-        return ResponseEntity.ok(baseItemRepository.itemBList());
-    }
-}
diff --git a/src/main/java/com/security/basic/mapped/ItemA.java b/src/main/java/com/security/basic/mapped/ItemA.java
deleted file mode 100644
index df2e243..0000000
--- a/src/main/java/com/security/basic/mapped/ItemA.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.security.basic.mapped;
-
-import javax.persistence.Entity;
-
-@Entity
-public class ItemA extends BaseItem{
-
-}
diff --git a/src/main/java/com/security/basic/mapped/ItemB.java b/src/main/java/com/security/basic/mapped/ItemB.java
deleted file mode 100644
index 6bef1a1..0000000
--- a/src/main/java/com/security/basic/mapped/ItemB.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package com.security.basic.mapped;
-
-import javax.persistence.Entity;
-import javax.persistence.Table;
-
-@Table(name = "item_a")
-@Entity
-public class ItemB extends BaseItem{
-
-}
diff --git a/src/main/java/com/security/basic/mapped/ItemDto.java b/src/main/java/com/security/basic/mapped/ItemDto.java
deleted file mode 100644
index 2422bda..0000000
--- a/src/main/java/com/security/basic/mapped/ItemDto.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.security.basic.mapped;
-
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-import lombok.Setter;
-
-@Getter
-@Setter
-@AllArgsConstructor
-public class ItemDto {
-
-    private Long id;
-    private String name;
-}