diff --git a/apps/app.js b/apps/app.js
new file mode 100644
index 0000000..ed8bb19
--- /dev/null
+++ b/apps/app.js
@@ -0,0 +1,228 @@
+import express, { query } from 'express';
+import { createDatabaseConnection } from '../db/database.js'; // db 연결 파일
+import { HandlePush } from './push.js';
+
+const cmcd = "/JJ";
+const db = "/JJ/db";
+
+const app = express();
+app.use(express.json());
+
+const dbConfig = {
+  host: 'ipStein.myDS.me',
+  user: 'root',
+  password: 'JJrootPW',
+  database: 'dev',
+  port: 8002
+};
+
+/*   
+  // query 클래스 묶음
+  let query; 
+  query = await getQueryModule('update', 'Update');
+  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+*/
+
+
+const getQueryModule = async (type, className) => {
+  if (type === 'create') {
+    const module = await import('../../db/queries/create_query.js');
+    return module[className];
+  }
+  else if (type === 'read') {
+    const module = await import('../../db/queries/read_query.js');
+    return module[className];
+  }
+  else if (type === 'update') {
+    const module = await import('../../db/queries/update_query.js');
+    return module[className];
+  }
+  else if (type === 'delete') {
+    const module = await import('../../db/queries/update_query.js');
+    return module[className];
+  }
+  else if (type === 'function') {
+    const module = await import('../../db/queries/functions_query.js');
+    return module[className];
+  }
+  return ''
+};
+
+app.get(`${cmcd}/push`, async (req, res) => {
+  // HandlePush(req, res);
+  //3138117983JJ20240611
+  // const { cid, title, body, cd } = req.query;
+  const { cid, title, body, badge, parameter } = req.query;
+
+  
+  if (!cid || !title || !body) {
+    return res.status(400).json({ error: 'All parameters (cid, title, body) are required' });
+  }
+
+  let query; 
+  query = await getQueryModule('function', 'Push');
+  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+
+  try {
+    const connection = await createDatabaseConnection({ ...dbConfig, database: 'jjungtable_db'});
+    const [rows] = await connection.query(query.loadFCM_token, [cid]);
+    await connection.end();
+
+    if (rows.length === 0) {
+      return res.status(404).json({ error: 'No fcm_token found for the provided cid' });
+    }
+
+    const fcmToken = rows[0].fcm_token;
+    console.log(fcmToken);
+    // HandlePush 호출 시 필요한 req.body에 fcmToken, title, body 설정
+    req.body = { fcmToken, title, body, badge, parameter };
+    HandlePush(req, res);
+
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+});
+
+
+// DB 연결 테스트
+app.get(`${db}/test`, async (req, res) => {
+  try {
+    const connection = await createDatabaseConnection(dbConfig);
+    const [rows] = await connection.query('SELECT 1 + 1 AS solution');
+    await connection.end();
+    res.json({ result: rows[0].solution });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+
+///////////////////////////////////////////////////////////////
+// GET
+///////////////////////////////////////////////////////////////
+app.get(`${db}/version/read`, async (req, res) => {
+  const { os_type } = req.query;
+  if (!os_type) { return res.status(400).json({ error: 'ostype parameter is required' }) }
+
+  let query; 
+  query = await getQueryModule('read', 'Read');
+  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+
+  try {
+    const connection = await createDatabaseConnection({ ...dbConfig, database: 'jjungtable_db' });
+    const [rows] = await connection.query(query.version, [os_type]); 
+    await connection.end();
+
+    if (rows.length === 0) {
+      return res.status(404).json({ error: 'No data found' });
+    }
+
+    res.json(rows);
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+});
+
+app.get(`${db}/userInfo/read`, async (req, res) => {
+  const { id, type } = req.query;
+  if (!id || !type) { return res.status(400).json({ error: 'ostype parameter is required' }) }
+
+  let query; 
+  query = await getQueryModule('read', 'Read');
+  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+
+  try {
+    const connection = await createDatabaseConnection({ ...dbConfig, database: 'jjungtable_db' });
+    const [rows] = await connection.query(query.login_code, [id, type]); 
+    await connection.end();
+
+    if (rows.length === 0) {
+      return res.status(404).json({ error: 'No data found' });
+    }
+
+    res.json(rows);
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+});
+
+///////////////////////////////////////////////////////////////
+// POST
+///////////////////////////////////////////////////////////////
+
+async function insertLog(table, connection, query, body) {
+  if (table === 'version') { 
+    const { date, managerId, os_type, final_ver, force_ver, update_ver, update_choice, log } = body;
+    await connection.query( query, [date, managerId, os_type, final_ver, force_ver, update_ver, update_choice, log] );
+  }
+}
+app.post(`${db}/version/update`, async (req, res) => {
+  const { date, managerId, os_type, final_ver, force_ver, update_ver, update_choice, log } = req.body;
+  try {
+    const connection = await createDatabaseConnection({ ...dbConfig});
+    let query; 
+
+    // 버전 정보 업데이트
+    query = await getQueryModule('update', 'Update');
+    if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+    await connection.query( query.version,[final_ver, force_ver, update_ver, update_choice, os_type]);
+    
+    // 로그 생성
+    query = await getQueryModule('create', 'Log');
+    if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+    await insertLog('version', connection, query.version_Log, req.body);
+
+    await connection.end();
+    res.json({ message: 'Update successful' });
+
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+
+
+
+///////////////////////////////////////////////////////////////
+// LOG 관련
+
+// DB Log 읽어들이기
+app.get(`${db}/log/read`, async (req, res) => {
+  console.log('[JJ]Log: Version');
+  const { param } = req.query;
+
+  try {
+    const connection = await createDatabaseConnection({ ...dbConfig });
+    let query, rows;
+    // let rows;
+    
+    if (param === 'version') { 
+      query = await getQueryModule('read', 'Log');
+      if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
+      [rows] = await connection.query(query.version_Log);
+    }
+
+    await connection.end();
+    res.json(rows);
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+});
+
+
+
+
+
+
+
+
+
+
+
+
+
+export default app;
\ No newline at end of file
diff --git a/apps/push.js b/apps/push.js
new file mode 100644
index 0000000..4d35511
--- /dev/null
+++ b/apps/push.js
@@ -0,0 +1,45 @@
+import { admin } from '../firebaseConfig.js';
+
+export function HandlePush(req, res) {
+  const { fcmToken, title, body, parameter, sound, badge } = req.body;
+
+  if (!fcmToken || !title || !body) {
+    res.status(400).json({ error: 'fcmToken, title, body, and parameter are required' });
+    return;
+  }
+
+  const message = {
+    token: fcmToken,
+    notification: {
+      title: title,
+      body: body,
+    },
+    apns: {
+      payload: {
+        aps: {
+          alert: {
+            title: title,
+            body: body,
+            parameter: parameter,
+          },
+          sound: sound || 'default',
+          badge: badge ? Number(badge) : 0,
+        },
+      },
+    },
+  };
+
+
+  // const jjApp = admin.app('jjungtable');
+
+  admin.app('jjungtable').messaging().send(message)
+    .then((response) => {
+      console.log('Successfully sent message:', response);
+      res.status(200).json({ message: 'Successfully sent message' });
+    })
+    .catch((error) => {
+      console.error('Error sending message:', error);
+      res.status(500).json({ error: `Error sending message: ${error.message}` });
+    });
+}
+
diff --git a/db/database.js b/db/database.js
new file mode 100644
index 0000000..abae567
--- /dev/null
+++ b/db/database.js
@@ -0,0 +1,16 @@
+
+import mysql from 'mysql2/promise';
+
+// 데이터베이스 연결 설정 함수
+export const createDatabaseConnection = (config) => {
+  return mysql.createConnection({
+    host: config.host,
+    user: config.user,
+    password: config.password,
+    database: config.database,
+    port: config.port,
+    waitForConnections: true,
+    connectionLimit: 10,
+    queueLimit: 0
+  });
+};
\ No newline at end of file
diff --git a/firebaseConfig.js b/firebaseConfig.js
new file mode 100644
index 0000000..3e5d7b6
--- /dev/null
+++ b/firebaseConfig.js
@@ -0,0 +1,59 @@
+import { initializeApp as initializeClientApp, getApps, getApp } from 'firebase/app';
+import admin from 'firebase-admin';
+import jjungtable_AccKey from './private/jjungtable-AccountKey.json' assert { type: 'json' };
+
+// 첫 번째 파이어베이스 초기화 (관리자)
+// if (!admin.apps.find(app => app.name === 'sManager')) {
+//   admin.initializeApp({
+//     credential: admin.credential.cert(sManager_AccKey),
+//     databaseURL: "https://checkanything-18bf9.firebaseio.com"
+//   }, 'sManager');
+// }
+
+// 파이어베이스 초기화
+if (!admin.apps.find(app => app.name === 'jjungtable')) {
+  admin.initializeApp({
+    credential: admin.credential.cert(jjungtable_AccKey),
+    databaseURL: "https://jjungtable-e5087-default-rtdb.firebaseio.com"
+  }, 'jjungtable');
+}
+
+// export const sm_firebaseConfig = {
+//   apiKey: "AIzaSyCxLVOqbrnlDwfx6WMbmTGtCGrUNoL-CqI",
+//   authDomain: "checkanything-18bf9.firebaseapp.com",
+//   projectId: "checkanything-18bf9",
+//   storageBucket: "checkanything-18bf9.appspot.com",
+//   messagingSenderId: "928156583361",
+//   appId: "1:928156583361:web:d157abe34e637fb2395b40",
+//   measurementId: "G-NBSP3XCXX7"
+// };
+
+export const jj_firebaseConfig = {
+  apiKey: "AIzaSyCHJI2u1lbmHYgKRvPSO9-mPOGENBBPnsg",
+  authDomain: "jjungtable-e5087.firebaseapp.com",
+  databaseURL: "https://jjungtable-e5087-default-rtdb.firebaseio.com",
+  projectId: "jjungtable-e5087",
+  storageBucket: "jjungtable-e5087.appspot.com",
+  messagingSenderId: "480609810019",
+  appId: "1:480609810019:web:b66f72216fa17e1b462a56",
+  measurementId: "G-BQP2SDL40C"
+};
+
+// 클라이언트 앱 초기화 (이미 초기화된 경우 확인)
+// let sm_ClientApp;
+// if (!getApps().some(app => app.name === 'sManagerClientApp')) {
+//   sm_ClientApp = initializeClientApp(sm_firebaseConfig, 'sManagerClientApp');
+// } else {
+//   sm_ClientApp = getApp('sManagerClientApp');
+// }
+
+let jj_ClientApp;
+if (!getApps().some(app => app.name === 'jjungtableClientApp')) {
+  jj_ClientApp = initializeClientApp(jj_firebaseConfig, 'jjungtableClientApp');
+} else {
+  jj_ClientApp = getApp('jjungtableClientApp');
+}
+
+// export { admin, sm_ClientApp, jj_ClientApp };
+
+export { admin, jj_ClientApp };
diff --git a/index.js b/index.js
index e715334..ac16455 100755
--- a/index.js
+++ b/index.js
@@ -1,15 +1,72 @@
-// index.js
-
+// npm install express body-parser swagger-jsdoc swagger-ui-express cookie-parser cors
 import express from 'express';
+import bodyParser from 'body-parser';
+import swaggerJSDoc from 'swagger-jsdoc';
+import swaggerUi from 'swagger-ui-express';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import cookieParser from 'cookie-parser';
+import cors from 'cors';
+
+// import jjungTableApp from './back/apps/jjungTable_index.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+console.log(__dirname);
+console.log(process.cwd());
 
 const app = express();
-const port = 7002;
 
-app.get('/', (req, res) => {
-  res.send('Hello World!123123123123');
-  
+app.use(cors());
+app.use(bodyParser.json()); // For parsing application/json
+app.use(cookieParser()); // For parsing cookies
+app.use(express.static(path.join(__dirname, 'Front'))); // Serve static files from Pront directory
+
+// Swagger setup
+const swaggerDefinition = {
+  openapi: '3.0.0',
+  info: {
+    title: 'My API',
+    version: '1.0.0',
+    description: 'API documentation',
+  },
+  servers: [
+    {
+      url: `http://localhost:7002`,
+      description: 'Local server',
+    },
+  ],
+};
+
+const options = {
+  swaggerDefinition,
+  apis: ['./back/apps/push.js'],
+};
+
+const swaggerSpec = swaggerJSDoc(options);
+
+app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec));
+
+app.use((req, res, next) => {
+  const host = req.headers.host;
+  console.log(`Client connected to host: ${host}`);
+  next();
 });
 
-app.listen(port, () => {
-  console.log(`Server is running at http://localhost:${port}`);
-});
\ No newline at end of file
+
+
+// Start the server
+
+//JJUNGTABLE 서버 연결
+const jjungTable_server = express();
+jjungTable_server.use(jjungTableApp);
+jjungTable_server.listen(7002, () => {
+  console.log(`Server running at http://localhost:7002/`);
+});
+
+// const sManagement_server = express();
+// sManagement_server.use(sManagementApp);
+// sManagement_server.listen(6004, () => {
+//   console.log(`Server running at https://localhost:6004/`);
+// });
\ No newline at end of file