diff --git a/simple_sns/build.gradle b/simple_sns/build.gradle
index 0d38bb74..5b7132d5 100644
--- a/simple_sns/build.gradle
+++ b/simple_sns/build.gradle
@@ -53,8 +53,8 @@ task cleanFrontEnd(type: Delete) {
     delete "$projectDir/front-end/static", "$projectDir/front-end/node_modules"
 }
 
-npmBuild.dependsOn npmInstall
-copyFrontEnd.dependsOn npmBuild
-compileJava.dependsOn copyFrontEnd
-
-clean.dependsOn cleanFrontEnd
\ No newline at end of file
+//npmBuild.dependsOn npmInstall
+//copyFrontEnd.dependsOn npmBuild
+//compileJava.dependsOn copyFrontEnd
+//
+//clean.dependsOn cleanFrontEnd
\ No newline at end of file
diff --git a/simple_sns/src/main/java/com/example/sns/SnsApplication.java b/simple_sns/src/main/java/com/example/sns/SnsApplication.java
index 265f9a37..00af6cb8 100644
--- a/simple_sns/src/main/java/com/example/sns/SnsApplication.java
+++ b/simple_sns/src/main/java/com/example/sns/SnsApplication.java
@@ -4,7 +4,7 @@ import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 
-@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
+@SpringBootApplication
 public class SnsApplication {
 
     public static void main(String[] args) {
diff --git a/simple_sns/src/main/java/com/example/sns/config/ImprovedNamingStrategy.java b/simple_sns/src/main/java/com/example/sns/config/ImprovedNamingStrategy.java
new file mode 100644
index 00000000..7cc8fcc3
--- /dev/null
+++ b/simple_sns/src/main/java/com/example/sns/config/ImprovedNamingStrategy.java
@@ -0,0 +1,45 @@
+package com.example.sns.config;
+
+import org.hibernate.boot.model.naming.Identifier;
+import org.hibernate.boot.model.naming.PhysicalNamingStrategy;
+import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
+import org.springframework.util.StringUtils;
+
+public class ImprovedNamingStrategy implements PhysicalNamingStrategy {
+
+    @Override
+    public Identifier toPhysicalCatalogName(Identifier identifier, JdbcEnvironment jdbcEnv) {
+        return convert(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalColumnName(Identifier identifier, JdbcEnvironment jdbcEnv) {
+        return convert(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalSchemaName(Identifier identifier, JdbcEnvironment jdbcEnv) {
+        return convert(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalSequenceName(Identifier identifier, JdbcEnvironment jdbcEnv) {
+        return convert(identifier);
+    }
+
+    @Override
+    public Identifier toPhysicalTableName(Identifier identifier, JdbcEnvironment jdbcEnv) {
+        return convert(identifier);
+    }
+
+    private Identifier convert(Identifier identifier) {
+        if (identifier == null || StringUtils.isEmpty(identifier.getText())) {
+            return identifier;
+        }
+
+        String regex = "([a-z])([A-Z])";
+        String replacement = "$1_$2";
+        String newName = identifier.getText().replaceAll(regex, replacement).toLowerCase();
+        return Identifier.toIdentifier(newName);
+    }
+}
\ No newline at end of file
diff --git a/simple_sns/src/main/java/com/example/sns/controller/response/UserJoinResponse.java b/simple_sns/src/main/java/com/example/sns/controller/response/UserJoinResponse.java
index a1c57c1e..20cb9f16 100644
--- a/simple_sns/src/main/java/com/example/sns/controller/response/UserJoinResponse.java
+++ b/simple_sns/src/main/java/com/example/sns/controller/response/UserJoinResponse.java
@@ -3,7 +3,9 @@ package com.example.sns.controller.response;
 import com.example.sns.model.User;
 import com.example.sns.model.UserRole;
 import lombok.AllArgsConstructor;
+import lombok.Getter;
 
+@Getter
 @AllArgsConstructor
 public class UserJoinResponse {
 
diff --git a/simple_sns/src/main/java/com/example/sns/model/entity/UserEntity.java b/simple_sns/src/main/java/com/example/sns/model/entity/UserEntity.java
index a1235d7f..c0153aff 100644
--- a/simple_sns/src/main/java/com/example/sns/model/entity/UserEntity.java
+++ b/simple_sns/src/main/java/com/example/sns/model/entity/UserEntity.java
@@ -11,9 +11,9 @@ import java.sql.Timestamp;
 import java.time.Instant;
 
 @Entity
-@Table(name = "\"user\"")
+@Table(name = "users")
 @Getter @Setter
-@SQLDelete(sql = "UPDATE \"user\" SET deleted_at = NOW() where id=?")
+@SQLDelete(sql = "UPDATE users SET deleted_at = NOW() where id=?")
 @Where(clause = "deleted_at IS NULL")
 public class UserEntity {
 
@@ -25,10 +25,12 @@ public class UserEntity {
     private String password;
 
     @Enumerated(EnumType.STRING)
-    private UserRole role;
+    private UserRole role = UserRole.USER;
 
     private Timestamp registeredAt;
     private Timestamp updatedAt;
+
+    @Column(name = "deleted_at")
     private Timestamp deletedAt;
 
     @PrePersist
diff --git a/simple_sns/src/main/resources/application.properties b/simple_sns/src/main/resources/application.properties
deleted file mode 100644
index 8b137891..00000000
--- a/simple_sns/src/main/resources/application.properties
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/simple_sns/src/main/resources/application.yml b/simple_sns/src/main/resources/application.yml
new file mode 100644
index 00000000..c1794ed9
--- /dev/null
+++ b/simple_sns/src/main/resources/application.yml
@@ -0,0 +1,23 @@
+
+spring:
+  jpa:
+    database: postgresql
+    hibernate:
+      naming:
+        physical-strategy: com.example.sns.config.ImprovedNamingStrategy
+      dialect: org.hibernate.dialect.PostgreSQLDialect
+      ddl-auto: update
+    properties:
+      hibernate:
+        format_sql: true
+    show-sql: true
+
+  datasource:
+    hikari:
+      maximum-pool-size: 4
+    url: jdbc:postgresql://ec2-44-209-24-62.compute-1.amazonaws.com/daipn3u0kdtqj
+    username: xckqpuxwsicvud
+    password: bc61f9c95d489227fe1a29eba14d2547c7185d449f081ef49f964b9d6bd1f110
+    platform: postgres
+    driver-class-name: org.postgresql.Driver
+