diff --git a/src/main/java/com/example/jpa/comment/controller/CommentController.java b/src/main/java/com/example/jpa/comment/controller/CommentController.java
new file mode 100644
index 0000000..06268aa
--- /dev/null
+++ b/src/main/java/com/example/jpa/comment/controller/CommentController.java
@@ -0,0 +1,59 @@
+package com.example.jpa.comment.controller;
+
+import com.example.jpa.comment.dto.request.CommentCreateRequest;
+import com.example.jpa.comment.dto.request.CommentUpdateRequest;
+import com.example.jpa.comment.dto.response.CommentResponse;
+import com.example.jpa.comment.service.CommentService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("api/comments")
+@RequiredArgsConstructor
+public class CommentController {
+
+    private final CommentService commentService;
+
+    @PostMapping
+    public ResponseEntity<Void> create(@RequestBody CommentCreateRequest commentCreateRequest) {
+
+        commentService.create(commentCreateRequest);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<CommentResponse> findOne(@PathVariable("id") Long id) {
+
+        CommentResponse commentResponse = commentService.findOne(id);
+
+        return ResponseEntity.ok(commentResponse);
+    }
+
+    @PatchMapping("/{id}")
+    public ResponseEntity<Void> update(@PathVariable("id") Long id, @RequestBody CommentUpdateRequest commentUpdateRequest) {
+
+        commentService.update(id, commentUpdateRequest);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable("id") Long id) {
+
+        commentService.delete(id);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @GetMapping
+    public ResponseEntity<List> findAll() {
+
+        List<CommentResponse> commentResponses = commentService.findAll();
+
+        return ResponseEntity.ok(commentResponses);
+    }
+}
diff --git a/src/main/java/com/example/jpa/comment/domain/Comment.java b/src/main/java/com/example/jpa/comment/domain/Comment.java
new file mode 100644
index 0000000..36e3638
--- /dev/null
+++ b/src/main/java/com/example/jpa/comment/domain/Comment.java
@@ -0,0 +1,44 @@
+package com.example.jpa.comment.domain;
+
+import com.example.jpa.member.domain.Member;
+import com.example.jpa.post.domain.Post;
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Comment {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "member")
+    private Member member;
+
+    @ManyToOne
+    @JoinColumn(name = "post")
+    private Post post;
+
+    private String content;
+
+    @Builder
+    public Comment(Member member, Post post, String content) {
+        this.member = member;
+        this.post = post;
+        this.content = content;
+    }
+
+    public Comment(Member member, String content) {
+        this.member = member;
+        this.content = content;
+    }
+
+    public void update(String content) {
+        this.content = content;
+    }
+}
diff --git a/src/main/java/com/example/jpa/comment/dto/request/CommentCreateRequest.java b/src/main/java/com/example/jpa/comment/dto/request/CommentCreateRequest.java
new file mode 100644
index 0000000..975df0c
--- /dev/null
+++ b/src/main/java/com/example/jpa/comment/dto/request/CommentCreateRequest.java
@@ -0,0 +1,22 @@
+package com.example.jpa.comment.dto.request;
+
+import com.example.jpa.comment.domain.Comment;
+import com.example.jpa.member.domain.Member;
+import com.example.jpa.post.domain.Post;
+import lombok.Getter;
+
+@Getter
+public class CommentCreateRequest {
+
+    private Long member;
+    private Long post;
+    private String content;
+
+    public Comment toEntity(Member member, Post post) {
+        return Comment.builder()
+                .member(member)
+                .post(post)
+                .content(this.content)
+                .build();
+    }
+}
diff --git a/src/main/java/com/example/jpa/comment/dto/request/CommentUpdateRequest.java b/src/main/java/com/example/jpa/comment/dto/request/CommentUpdateRequest.java
new file mode 100644
index 0000000..a018a5a
--- /dev/null
+++ b/src/main/java/com/example/jpa/comment/dto/request/CommentUpdateRequest.java
@@ -0,0 +1,10 @@
+package com.example.jpa.comment.dto.request;
+
+import lombok.Getter;
+
+@Getter
+public class CommentUpdateRequest {
+
+    private String content;
+
+}
diff --git a/src/main/java/com/example/jpa/comment/dto/response/CommentResponse.java b/src/main/java/com/example/jpa/comment/dto/response/CommentResponse.java
new file mode 100644
index 0000000..ef415d0
--- /dev/null
+++ b/src/main/java/com/example/jpa/comment/dto/response/CommentResponse.java
@@ -0,0 +1,20 @@
+package com.example.jpa.comment.dto.response;
+
+import com.example.jpa.comment.domain.Comment;
+import lombok.Getter;
+
+@Getter
+public class CommentResponse {
+
+    private Long id;
+    private String content;
+
+    public CommentResponse(Long id, String content) {
+        this.id = id;
+        this.content = content;
+    }
+
+    public static CommentResponse from(Comment comment) {
+        return new CommentResponse(comment.getId(), comment.getContent());
+    }
+}
diff --git a/src/main/java/com/example/jpa/comment/service/CommentService.java b/src/main/java/com/example/jpa/comment/service/CommentService.java
new file mode 100644
index 0000000..13527ca
--- /dev/null
+++ b/src/main/java/com/example/jpa/comment/service/CommentService.java
@@ -0,0 +1,61 @@
+package com.example.jpa.comment.service;
+
+import com.example.jpa.comment.domain.Comment;
+import com.example.jpa.comment.dto.request.CommentCreateRequest;
+import com.example.jpa.comment.dto.request.CommentUpdateRequest;
+import com.example.jpa.comment.dto.response.CommentResponse;
+import com.example.jpa.member.domain.Member;
+import com.example.jpa.post.domain.Post;
+import com.example.jpa.repository.CommentRepository;
+import com.example.jpa.repository.MemberRepository;
+import com.example.jpa.repository.PostRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.stream.Collectors;
+
+@Service
+@RequiredArgsConstructor
+public class CommentService {
+
+    private final CommentRepository commentRepository;
+    private final MemberRepository memberRepository;
+    private final PostRepository postRepository;
+
+    @Transactional
+    public void create(CommentCreateRequest commentCreateRequest) {
+        Member member = memberRepository.findById(commentCreateRequest.getMember()).get();
+        Post post = postRepository.findById(commentCreateRequest.getPost()).get();
+        commentRepository.save(commentCreateRequest.toEntity(member, post));
+    }
+
+    @Transactional(readOnly = true)
+    public CommentResponse findOne(Long id) {
+        Comment comment = commentRepository.findById(id)
+                .orElseThrow(() -> new NoSuchElementException("댓글이 존재하지 않습니다."));
+
+        return CommentResponse.from(comment);
+    }
+
+    @Transactional
+    public void update(Long id, CommentUpdateRequest commentUpdateRequest) {
+        Comment comment = commentRepository.findById(id)
+                .orElseThrow(() -> new NoSuchElementException("댓글이 존재하지 않습니다."));
+        comment.update(commentUpdateRequest.getContent());
+    }
+
+    @Transactional
+    public void delete(Long id) {
+        commentRepository.deleteById(id);
+    }
+
+    @Transactional(readOnly = true)
+    public List<CommentResponse> findAll() {
+        return commentRepository.findAll().stream()
+                .map(CommentResponse::from)
+                .collect(Collectors.toList());
+    }
+}
diff --git a/src/main/java/com/example/jpa/member/controller/MemberController.java b/src/main/java/com/example/jpa/member/controller/MemberController.java
index 16fb71f..a27c4c3 100644
--- a/src/main/java/com/example/jpa/member/controller/MemberController.java
+++ b/src/main/java/com/example/jpa/member/controller/MemberController.java
@@ -1,17 +1,15 @@
 package com.example.jpa.member.controller;
 
 import com.example.jpa.member.dto.request.MemberCreateRequest;
+import com.example.jpa.member.dto.request.MemberUpdateRequest;
 import com.example.jpa.member.dto.response.MemberResponse;
 import com.example.jpa.member.service.MemberService;
 import lombok.RequiredArgsConstructor;
 
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
 
 @RestController
 @RequestMapping("api/members")
@@ -35,4 +33,28 @@ public ResponseEntity<MemberResponse> findOne(@PathVariable("id") Long id) {
 
         return ResponseEntity.ok(memberResponse);
     }
+
+    @PatchMapping("/{id}")
+    public ResponseEntity<Void> update(@PathVariable("id") Long id, @RequestBody MemberUpdateRequest memberUpdateRequest) {
+
+        memberService.update(id, memberUpdateRequest);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable("id") Long id) {
+
+        memberService.delete(id);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @GetMapping
+    public ResponseEntity<List> findAll() {
+
+        List<MemberResponse> memberResponses = memberService.findAll();
+
+        return ResponseEntity.ok(memberResponses);
+    }
 }
diff --git a/src/main/java/com/example/jpa/member/domain/Member.java b/src/main/java/com/example/jpa/member/domain/Member.java
index 92ca27b..356f9b6 100644
--- a/src/main/java/com/example/jpa/member/domain/Member.java
+++ b/src/main/java/com/example/jpa/member/domain/Member.java
@@ -1,14 +1,16 @@
 package com.example.jpa.member.domain;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import com.example.jpa.comment.domain.Comment;
+import com.example.jpa.post.domain.Post;
+import jakarta.persistence.*;
 import lombok.AccessLevel;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Entity
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
@@ -20,12 +22,18 @@ public class Member {
 
     private String name;
 
+    @OneToMany(mappedBy = "member", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Post> posts = new ArrayList<>();
+
+    @OneToMany(mappedBy = "member", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Comment> comments = new ArrayList<>();
+
     @Builder
     public Member(String name) {
         this.name = name;
     }
 
-    void update(String name) {
+    public void update(String name) {
         this.name = name;
     }
 }
diff --git a/src/main/java/com/example/jpa/member/dto/request/MemberUpdateRequest.java b/src/main/java/com/example/jpa/member/dto/request/MemberUpdateRequest.java
new file mode 100644
index 0000000..b98ce00
--- /dev/null
+++ b/src/main/java/com/example/jpa/member/dto/request/MemberUpdateRequest.java
@@ -0,0 +1,10 @@
+package com.example.jpa.member.dto.request;
+
+import lombok.Getter;
+
+@Getter
+public class MemberUpdateRequest {
+
+    private String name;
+
+}
diff --git a/src/main/java/com/example/jpa/member/service/MemberService.java b/src/main/java/com/example/jpa/member/service/MemberService.java
index fa8740b..2e259c8 100644
--- a/src/main/java/com/example/jpa/member/service/MemberService.java
+++ b/src/main/java/com/example/jpa/member/service/MemberService.java
@@ -2,10 +2,14 @@
 
 import com.example.jpa.member.domain.Member;
 import com.example.jpa.member.dto.request.MemberCreateRequest;
+import com.example.jpa.member.dto.request.MemberUpdateRequest;
 import com.example.jpa.member.dto.response.MemberResponse;
 import com.example.jpa.repository.MemberRepository;
+
+import java.util.List;
 import java.util.NoSuchElementException;
-import java.util.Optional;
+import java.util.stream.Collectors;
+
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -29,5 +33,22 @@ public MemberResponse findOne(Long id) {
         return MemberResponse.from(member);
     }
 
+    @Transactional
+    public void update(Long id, MemberUpdateRequest memberUpdateRequest) {
+        Member member = memberRepository.findById(id)
+                .orElseThrow(() -> new NoSuchElementException("게시글이 존재하지 않습니다."));
+        member.update(memberUpdateRequest.getName());
+    }
+
+    @Transactional
+    public void delete(Long id) {
+        memberRepository.deleteById(id);
+    }
 
+    @Transactional(readOnly = true)
+    public List<MemberResponse> findAll() {
+        return memberRepository.findAll().stream()
+                .map(MemberResponse::from)
+                .collect(Collectors.toList());
+    }
 }
diff --git a/src/main/java/com/example/jpa/post/controller/PostController.java b/src/main/java/com/example/jpa/post/controller/PostController.java
new file mode 100644
index 0000000..de1ce46
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/controller/PostController.java
@@ -0,0 +1,60 @@
+package com.example.jpa.post.controller;
+
+import com.example.jpa.post.dto.request.PostCreateRequest;
+import com.example.jpa.post.dto.request.PostUpdateRequest;
+import com.example.jpa.post.dto.response.PostAllResponse;
+import com.example.jpa.post.dto.response.PostResponse;
+import com.example.jpa.post.service.PostService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("api/posts")
+@RequiredArgsConstructor
+public class PostController {
+
+    private final PostService postService;
+
+    @PostMapping
+    public ResponseEntity<Void> create(@RequestBody PostCreateRequest postCreateRequest) {
+
+        postService.create(postCreateRequest);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<PostResponse> findOne(@PathVariable("id") Long id) {
+
+        PostResponse postResponse = postService.findOne(id);
+
+        return ResponseEntity.ok(postResponse);
+    }
+
+    @PatchMapping("/{id}")
+    public ResponseEntity<Void> update(@PathVariable("id") Long id, @RequestBody PostUpdateRequest postUpdateRequest) {
+
+        postService.update(id, postUpdateRequest);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable("id") Long id) {
+
+        postService.delete(id);
+
+        return ResponseEntity.ok().build();
+    }
+
+    @GetMapping
+    public ResponseEntity<List> findAll() {
+
+        List<PostAllResponse> postResponses = postService.findAll();
+
+        return ResponseEntity.ok(postResponses);
+    }
+}
diff --git a/src/main/java/com/example/jpa/post/domain/Post.java b/src/main/java/com/example/jpa/post/domain/Post.java
new file mode 100644
index 0000000..ee949ee
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/domain/Post.java
@@ -0,0 +1,44 @@
+package com.example.jpa.post.domain;
+
+import com.example.jpa.comment.domain.Comment;
+import com.example.jpa.member.domain.Member;
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Post {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "member")
+    private Member member;
+
+    private String title;
+    private String content;
+
+    @OneToMany(mappedBy = "post", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Comment> comments = new ArrayList<>();
+
+    @Builder
+    public Post(Member member, String title, String content) {
+        this.member = member;
+        this.title = title;
+        this.content = content;
+    }
+
+    public void update(String title, String content) {
+        this.title = title;
+        this.content = content;
+    }
+}
diff --git a/src/main/java/com/example/jpa/post/dto/request/PostCreateRequest.java b/src/main/java/com/example/jpa/post/dto/request/PostCreateRequest.java
new file mode 100644
index 0000000..6501bb3
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/dto/request/PostCreateRequest.java
@@ -0,0 +1,21 @@
+package com.example.jpa.post.dto.request;
+
+import com.example.jpa.member.domain.Member;
+import com.example.jpa.post.domain.Post;
+import lombok.Getter;
+
+@Getter
+public class PostCreateRequest {
+
+    private Long member;
+    private String title;
+    private String content;
+
+    public Post toEntity(Member member) {
+        return Post.builder()
+                .member(member)
+                .title(this.title)
+                .content(this.content)
+                .build();
+    }
+}
diff --git a/src/main/java/com/example/jpa/post/dto/request/PostUpdateRequest.java b/src/main/java/com/example/jpa/post/dto/request/PostUpdateRequest.java
new file mode 100644
index 0000000..3b351a4
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/dto/request/PostUpdateRequest.java
@@ -0,0 +1,11 @@
+package com.example.jpa.post.dto.request;
+
+import lombok.Getter;
+
+@Getter
+public class PostUpdateRequest {
+
+    private String title;
+    private String content;
+
+}
diff --git a/src/main/java/com/example/jpa/post/dto/response/PostAllResponse.java b/src/main/java/com/example/jpa/post/dto/response/PostAllResponse.java
new file mode 100644
index 0000000..3beda96
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/dto/response/PostAllResponse.java
@@ -0,0 +1,22 @@
+package com.example.jpa.post.dto.response;
+
+import com.example.jpa.post.domain.Post;
+import lombok.Getter;
+
+@Getter
+public class PostAllResponse {
+
+    private Long id;
+    private String title;
+    private String content;
+
+    public PostAllResponse(Long id, String title, String content) {
+        this.id = id;
+        this.title = title;
+        this.content = content;
+    }
+
+    public static PostAllResponse from(Post post) {
+        return new PostAllResponse(post.getId(), post.getTitle(), post.getContent());
+    }
+}
diff --git a/src/main/java/com/example/jpa/post/dto/response/PostResponse.java b/src/main/java/com/example/jpa/post/dto/response/PostResponse.java
new file mode 100644
index 0000000..4d92184
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/dto/response/PostResponse.java
@@ -0,0 +1,29 @@
+package com.example.jpa.post.dto.response;
+
+import com.example.jpa.post.domain.Post;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+public class PostResponse {
+
+    private Long id;
+    private String title;
+    private String name;
+    private String content;
+    private List<String> comments;
+
+    public PostResponse(Long id, String title, String name, String content, List<String> comments) {
+        this.id = id;
+        this.title = title;
+        this.name = name;
+        this.content = content;
+        this.comments = comments;
+    }
+
+    public static PostResponse from(Post post, String name, List<String> comments) {
+        return new PostResponse(post.getId(), post.getTitle(), name, post.getContent(), comments);
+    }
+
+}
diff --git a/src/main/java/com/example/jpa/post/service/PostService.java b/src/main/java/com/example/jpa/post/service/PostService.java
new file mode 100644
index 0000000..d0062a4
--- /dev/null
+++ b/src/main/java/com/example/jpa/post/service/PostService.java
@@ -0,0 +1,65 @@
+package com.example.jpa.post.service;
+
+import com.example.jpa.comment.domain.Comment;
+import com.example.jpa.member.domain.Member;
+import com.example.jpa.post.domain.Post;
+import com.example.jpa.post.dto.request.PostCreateRequest;
+import com.example.jpa.post.dto.request.PostUpdateRequest;
+import com.example.jpa.post.dto.response.PostAllResponse;
+import com.example.jpa.post.dto.response.PostResponse;
+import com.example.jpa.repository.CommentRepository;
+import com.example.jpa.repository.MemberRepository;
+import com.example.jpa.repository.PostRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.stream.Collectors;
+
+@Service
+@RequiredArgsConstructor
+public class PostService {
+
+    private final PostRepository postRepository;
+    private final MemberRepository memberRepository;
+    private final CommentRepository commentRepository;
+
+    @Transactional
+    public void create(PostCreateRequest postCreateRequest) {
+        Member member = memberRepository.findById(postCreateRequest.getMember()).get();
+        postRepository.save(postCreateRequest.toEntity(member));
+    }
+
+    @Transactional(readOnly = true)
+    public PostResponse findOne(Long id) {
+        Post post = postRepository.findById(id)
+                .orElseThrow(() -> new NoSuchElementException("게시글이 존재하지 않습니다."));
+        List<String> comments = commentRepository.findByPostID(id)
+                .stream()
+                .map(Comment::getContent)
+                .collect(Collectors.toList());
+
+        return PostResponse.from(post, post.getMember().getName(), comments);
+    }
+
+    @Transactional
+    public void update(Long id, PostUpdateRequest postUpdateRequest) {
+        Post post = postRepository.findById(id)
+                .orElseThrow(() -> new NoSuchElementException("게시글이 존재하지 않습니다."));
+        post.update(postUpdateRequest.getTitle(), postUpdateRequest.getContent());
+    }
+
+    @Transactional
+    public void delete(Long id) {
+        postRepository.deleteById(id);
+    }
+
+    @Transactional(readOnly = true)
+    public List<PostAllResponse> findAll() {
+        return postRepository.findAll().stream()
+                .map(PostAllResponse::from)
+                .collect(Collectors.toList());
+    }
+}
diff --git a/src/main/java/com/example/jpa/repository/CommentRepository.java b/src/main/java/com/example/jpa/repository/CommentRepository.java
new file mode 100644
index 0000000..802401c
--- /dev/null
+++ b/src/main/java/com/example/jpa/repository/CommentRepository.java
@@ -0,0 +1,16 @@
+package com.example.jpa.repository;
+
+import com.example.jpa.comment.domain.Comment;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.util.List;
+
+public interface CommentRepository extends JpaRepository<Comment, Long> {
+    @Query("select new com.example.jpa.comment.domain.Comment(c.member, c.content) " +
+            "from Comment c " +
+            "where c.post.id = :id")
+    List<Comment> findByPostID(@Param("id") Long id);
+
+}
diff --git a/src/main/java/com/example/jpa/repository/PostRepository.java b/src/main/java/com/example/jpa/repository/PostRepository.java
new file mode 100644
index 0000000..0a9f831
--- /dev/null
+++ b/src/main/java/com/example/jpa/repository/PostRepository.java
@@ -0,0 +1,7 @@
+package com.example.jpa.repository;
+
+import com.example.jpa.post.domain.Post;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface PostRepository extends JpaRepository<Post, Long> {
+}
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index f13d82c..7391553 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -3,7 +3,7 @@ server:
 
 spring:
   datasource:
-    url: jdbc:mysql://localhost:3306/jpa?serverTimezone=UTC
+    url: jdbc:mysql://localhost:3307/jpa?serverTimezone=UTC
     driver-class-name: com.mysql.cj.jdbc.Driver
     username: root
     password: mysql