diff --git a/03_source/cms_backend/package.json b/03_source/cms_backend/package.json
index dafd392..045663a 100644
--- a/03_source/cms_backend/package.json
+++ b/03_source/cms_backend/package.json
@@ -5,6 +5,7 @@
   "description": "Mock server & assets",
   "private": true,
   "scripts": {
+    "dev:check": "yarn tsc:w",
     "dev": "next dev -p 7272 -H 0.0.0.0",
     "start": "next start -p 7272 -H 0.0.0.0",
     "build": "next build",
@@ -31,7 +32,9 @@
     "db:push": "prisma db push --force-reset",
     "db:push:w": "npx nodemon --delay 1 --watch prisma --ext \"ts,tsx,prisma\" --exec \"yarn db:push && yarn seed\"",
     "db:studio": "prisma studio",
-    "db:studio:w": "npx nodemon --delay 1 --watch prisma --ext \"prisma\" --exec \"yarn db:studio\""
+    "db:studio:w": "npx nodemon --delay 1 --watch prisma --ext \"prisma\" --exec \"yarn db:studio\"",
+    "db:dev": "yarn db:push && yarn seed && yarn dev",
+    "db:dev:w": "npx nodemon --delay 1  --ext \"ts,tsx,prisma\" --exec \"yarn db:dev\""
   },
   "engines": {
     "node": ">=20"
@@ -68,6 +71,7 @@
     "@types/react": "^18.3.20",
     "@types/react-dom": "^18.3.5",
     "@typescript-eslint/parser": "^8.28.0",
+    "concurrently": "^9.1.2",
     "eslint": "^9.23.0",
     "eslint-import-resolver-typescript": "^4.2.2",
     "eslint-plugin-import": "^2.31.0",
diff --git a/03_source/cms_backend/prisma/schema.prisma b/03_source/cms_backend/prisma/schema.prisma
index f8d57f5..741a4f1 100644
--- a/03_source/cms_backend/prisma/schema.prisma
+++ b/03_source/cms_backend/prisma/schema.prisma
@@ -1148,47 +1148,58 @@ model EventReview {
 // mapped to IEventItem
 // a.k.a. PartyEvent party-event
 model EventItem {
-  id             String        @id @default(uuid())
-  createdAt      DateTime      @default(now())
-  updatedAt      DateTime      @updatedAt
+  id                   String        @id @default(uuid())
+  createdAt            DateTime      @default(now())
+  updatedAt            DateTime      @updatedAt
   //
-  available      Int
-  category       String
-  code           String
-  colors         String[]
-  coverUrl       String
-  description    String
-  gender         String[]
-  images         String[]
-  inventoryType  String
-  name           String
-  newLabel       Json
-  price          Float
-  priceSale      Float?
-  publish        String
-  quantity       Int
-  ratings        Json[]
-  saleLabel      Json
-  sizes          String[]
-  sku            String
-  subDescription String
-  tags           String[]
-  taxes          Float
-  totalRatings   Float
-  totalReviews   Int
-  totalSold      Int
+  available            Int           @default(99)
+  category             String
+  code                 String        @default("")
+  colors               String[]
+  coverUrl             String
+  description          String
+  gender               String[]
+  images               String[]
+  inventoryType        String        @default("")
+  name                 String        @default("")
+  newLabel             Json          @default("{}")
+  price                Float         @default(999.9)
+  priceSale            Float?        @default(111.1)
+  publish              String        @default("")
+  quantity             Int           @default(99)
+  ratings              Json[]
+  saleLabel            Json          @default("{}")
+  sizes                String[]      @default([""])
+  sku                  String        @default("")
+  subDescription       String        @default("")
+  tags                 String[]      @default([""])
+  taxes                Float         @default(5.0)
+  totalRatings         Float         @default(5.0)
+  totalReviews         Int           @default(10)
+  totalSold            Int           @default(10)
   //
-  ageBottom      Float
-  ageTop         Float
-  avatar         String[]
-  currency       String
-  duration_m     Float
-  eventDate      DateTime      @default(now())
-  joinMembers    Json[]
-  location       String
-  title          String
+  ageBottom            Float         @default(-1)
+  ageTop               Float         @default(-1)
+  avatar               String[]      @default([""])
+  currency             String        @default("HKD")
+  capacity             Int           @default(10)
+  duration_m           Float         @default(180)
+  endDate              String?       @default("")
+  eventDate            DateTime      @default(now())
+  isFeatured           Boolean       @default(false)
+  joinMembers          Json[]        @default([])
+  location             String        @default("HK")
+  organizer            String        @default("")
+  registrationDeadline String        @default("")
+  requirements         String        @default("")
+  schedule             String        @default("")
+  speakers             String[]      @default([])
+  sponsors             String[]      @default([])
+  startDate            String?       @default("")
+  status               String?       @default("")
+  title                String        @default("")
   //
-  reviews        EventReview[]
+  reviews              EventReview[]
 }
 
 model AppLog {
diff --git a/03_source/cms_backend/scripts/00_dev.sh b/03_source/cms_backend/scripts/00_dev.sh
index f7153d7..60cb2d2 100755
--- a/03_source/cms_backend/scripts/00_dev.sh
+++ b/03_source/cms_backend/scripts/00_dev.sh
@@ -5,13 +5,13 @@ yarn --dev
 clear
 
 while true; do
-  yarn db:push
-
-  yarn seed
+  # yarn db:push
+  # yarn seed
 
   yarn db:studio &
 
-  yarn dev
+  npx nodemon --ext ts,tsx,prisma --exec "yarn dev"
+  # yarn dev
 
   echo "restarting..."
   sleep 1
diff --git a/03_source/cms_backend/scripts/01_db_push.sh b/03_source/cms_backend/scripts/01_db_push.sh
new file mode 100755
index 0000000..317f711
--- /dev/null
+++ b/03_source/cms_backend/scripts/01_db_push.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+yarn --dev
+
+clear
+
+while true; do
+  npx nodemon --ext prisma --exec "yarn db:push && yarn seed"
+  echo "restarting..."
+  sleep 1
+done
diff --git a/03_source/cms_backend/src/app/api/party-event/create/route.ts b/03_source/cms_backend/src/app/api/party-event/create/route.ts
new file mode 100644
index 0000000..7a193df
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/create/route.ts
@@ -0,0 +1,40 @@
+// src/app/api/party-event/create/route.ts
+//
+// PURPOSE:
+// Create new party event in db
+//
+// RULES:
+// T.B.A.
+
+import type { NextRequest } from 'next/server';
+
+import { STATUS, response, handleError } from 'src/utils/response';
+
+import { isDev } from 'src/constants';
+import { createEvent } from 'src/app/services/party-event.service';
+
+// ----------------------------------------------------------------------
+
+/** **************************************
+ * POST - Create PartyEvent
+ *************************************** */
+export async function POST(req: NextRequest) {
+  const { partyEventData } = await req.json();
+
+  try {
+    if (isDev) {
+      console.log({ partyEventData });
+    }
+
+    const created = await createEvent(partyEventData);
+
+    if (isDev) {
+      console.log('Event created successfully');
+    }
+
+    return response(created, STATUS.OK);
+  } catch (error) {
+    console.error('Error creating event:', { partyEventData });
+    return handleError('PartyEvent - Create', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/create/test.http b/03_source/cms_backend/src/app/api/party-event/create/test.http
new file mode 100644
index 0000000..3b3669f
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/create/test.http
@@ -0,0 +1,34 @@
+###
+
+POST http://localhost:7272/api/party-event/create
+Content-Type: application/json
+
+{
+  "partyEventData": {
+    "title": "Summer Music Festival",
+    "description": "Annual summer music festival featuring local bands and artists",
+    "startDate": "2024-07-15T18:00:00Z",
+    "endDate": "2024-07-15T23:00:00Z",
+    "location": "Central Park, Hong Kong",
+    "coverUrl": "",
+    "images": [
+        "data:image/png;base64,C",
+        "data:image/png;base64,C"
+    ],
+    "tags": [
+        "Music",
+        "Festival"
+    ],
+    "status": "upcoming",
+    "capacity": 500,
+    "price": 150.00,
+    "organizer": "HK Music Society",
+    "category": "Music",
+    "isFeatured": true,
+    "registrationDeadline": "2024-07-10T00:00:00Z",
+    "requirements": "Age 18+",
+    "schedule": "18:00 Doors open\n19:00 First performance\n21:00 Main act",
+    "speakers": ["DJ Lee", "Band XYZ"],
+    "sponsors": ["HK Radio", "Music Magazine"]
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/delete/route.ts b/03_source/cms_backend/src/app/api/party-event/delete/route.ts
new file mode 100644
index 0000000..5c356d6
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/delete/route.ts
@@ -0,0 +1,22 @@
+import type { NextRequest } from 'next/server';
+
+import { STATUS, response, handleError } from 'src/utils/response';
+
+import { deleteEvent } from 'src/app/services/party-event.service';
+
+/** **************************************
+ * PATCH - Delete PartyEvent
+ *************************************** */
+export async function PATCH(req: NextRequest) {
+  try {
+    const { eventId } = await req.json();
+
+    if (!eventId) throw new Error('eventId cannot be null');
+
+    await deleteEvent(eventId);
+
+    return response({ eventId }, STATUS.OK);
+  } catch (error) {
+    return handleError('PartyEvent - Delete', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/delete/test.http b/03_source/cms_backend/src/app/api/party-event/delete/test.http
new file mode 100644
index 0000000..a0ca061
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/delete/test.http
@@ -0,0 +1,8 @@
+###
+
+PATCH http://localhost:7272/api/party-event/delete
+Content-Type: application/json
+
+{
+  "eventId": "e99f09a7-dd88-49d5-b1c8-1daf80c2d7b01"
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/details/route.ts b/03_source/cms_backend/src/app/api/party-event/details/route.ts
new file mode 100644
index 0000000..590acf6
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/details/route.ts
@@ -0,0 +1,56 @@
+// src/app/api/party-event/details/route.ts
+//
+// PURPOSE:
+// Get party event from db by id
+//
+// RULES:
+// T.B.A.
+
+import type { NextRequest } from 'next/server';
+
+import { logger } from 'src/utils/logger';
+import { STATUS, response, handleError } from 'src/utils/response';
+
+import { L_INFO, L_ERROR } from 'src/constants';
+import { getEvent } from 'src/app/services/party-event.service';
+import { createAppLog } from 'src/app/services/app-log.service';
+
+import { flattenNextjsRequest } from '../../auth/sign-in/flattenNextjsRequest';
+
+// ----------------------------------------------------------------------
+
+/**
+ **************************************
+ * GET PartyEvent detail
+ ***************************************
+ */
+export async function GET(req: NextRequest) {
+  const debug = { 'req.headers': flattenNextjsRequest(req) };
+
+  try {
+    const { searchParams } = req.nextUrl;
+
+    // RULES: eventId must exist
+    const eventId = searchParams.get('eventId');
+    if (!eventId) {
+      return response({ message: 'Event ID is required!' }, STATUS.BAD_REQUEST);
+    }
+
+    // NOTE: eventId confirmed exist, run below
+    const event = await getEvent(eventId);
+
+    if (!event) {
+      return response({ message: 'Event not found!' }, STATUS.NOT_FOUND);
+    }
+
+    logger('[PartyEvent] details', event.id);
+
+    createAppLog(L_INFO, 'Get event detail OK', debug);
+
+    return response({ event }, STATUS.OK);
+  } catch (error) {
+    createAppLog(L_ERROR, 'event detail error', debug);
+
+    return handleError('PartyEvent - Get details', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/details/test.http b/03_source/cms_backend/src/app/api/party-event/details/test.http
new file mode 100644
index 0000000..414b66f
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/details/test.http
@@ -0,0 +1,9 @@
+###
+
+# Get details for a specific party event
+GET http://localhost:7272/api/party-event/details?eventId=e99f09a7-dd88-49d5-b1c8-1daf80c2d7b01
+
+###
+
+# Alternative format with different ID
+GET http://localhost:7272/api/party-event/details?eventId=evt_987654321
diff --git a/03_source/cms_backend/src/app/api/party-event/helloworld/route.ts b/03_source/cms_backend/src/app/api/party-event/helloworld/route.ts
new file mode 100644
index 0000000..d11982a
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/helloworld/route.ts
@@ -0,0 +1,16 @@
+import type { NextRequest, NextResponse } from 'next/server';
+
+import { STATUS, response, handleError } from 'src/utils/response';
+
+/**
+ ***************************************
+ * GET - helloworld
+ ***************************************
+ */
+export async function GET(req: NextRequest, res: NextResponse) {
+  try {
+    return response({ helloworld: 'party-event' }, STATUS.OK);
+  } catch (error) {
+    return handleError('Helloworld - Get all', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/helloworld/test.http b/03_source/cms_backend/src/app/api/party-event/helloworld/test.http
new file mode 100644
index 0000000..d29b86d
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/helloworld/test.http
@@ -0,0 +1,4 @@
+###
+GET /api/party-event/helloworld HTTP/1.1
+Host: localhost:7272
+
diff --git a/03_source/cms_backend/src/app/api/party-event/list/route.ts b/03_source/cms_backend/src/app/api/party-event/list/route.ts
new file mode 100644
index 0000000..c5b7802
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/list/route.ts
@@ -0,0 +1,38 @@
+// src/app/api/party-event/list/route.ts
+//
+// PURPOSE:
+// List all party events from db
+//
+// RULES:
+// T.B.A.
+
+import type { NextRequest } from 'next/server';
+
+import { STATUS, response, handleError } from 'src/utils/response';
+
+import { L_INFO, L_ERROR } from 'src/constants';
+import { createAppLog } from 'src/app/services/app-log.service';
+import { listEvents } from 'src/app/services/party-event.service';
+
+import { flattenNextjsRequest } from '../../auth/sign-in/flattenNextjsRequest';
+
+// ----------------------------------------------------------------------
+
+/** **************************************
+ * GET - PartyEvents list
+ *************************************** */
+export async function GET(req: NextRequest) {
+  const debug = { 'req.headers': flattenNextjsRequest(req) };
+
+  try {
+    const events = await listEvents();
+
+    createAppLog(L_INFO, 'party-event list ok', {});
+
+    return response({ events }, STATUS.OK);
+  } catch (error) {
+    createAppLog(L_ERROR, 'party-event list error', debug);
+
+    return handleError('PartyEvent - Get list', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/list/test.http b/03_source/cms_backend/src/app/api/party-event/list/test.http
new file mode 100644
index 0000000..788b577
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/list/test.http
@@ -0,0 +1,14 @@
+###
+
+# Basic list all party events
+GET http://localhost:7272/api/party-event/list
+
+###
+
+# List upcoming party events
+GET http://localhost:7272/api/party-event/list?status=upcoming
+
+###
+
+# List featured party events
+GET http://localhost:7272/api/party-event/list?isFeatured=true
diff --git a/03_source/cms_backend/src/app/api/party-event/route.ts b/03_source/cms_backend/src/app/api/party-event/route.ts
new file mode 100644
index 0000000..b8feb93
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/route.ts
@@ -0,0 +1,75 @@
+import type { NextRequest, NextResponse } from 'next/server';
+
+import { STATUS, response, handleError } from 'src/utils/response';
+
+import { listEvents, deleteEvent, updateEvent, createEvent } from 'src/app/services/party-event.service';
+
+/**
+ **************************************
+ * GET - PartyEvent
+ ***************************************
+ */
+export async function GET(req: NextRequest, res: NextResponse) {
+  try {
+    const events = await listEvents();
+    return response(events, STATUS.OK);
+  } catch (error) {
+    return handleError('PartyEvent - Get list', error);
+  }
+}
+
+/**
+ ***************************************
+ * POST - Create PartyEvent
+ ***************************************
+ */
+export async function POST(req: NextRequest) {
+  const OPERATION = 'PartyEvent - Create';
+  const { data } = await req.json();
+
+  try {
+    const event = await createEvent(data);
+    return response(OPERATION, STATUS.OK);
+  } catch (error) {
+    return handleError(OPERATION, error);
+  }
+}
+
+/**
+ ***************************************
+ * PUT - Update PartyEvent
+ ***************************************
+ */
+export async function PUT(req: NextRequest) {
+  const { searchParams } = req.nextUrl;
+  const eventId = searchParams.get('eventId');
+  const { data } = await req.json();
+
+  try {
+    if (!eventId) throw new Error('eventId cannot be null');
+
+    const result = await updateEvent(eventId, data);
+    return response(result, STATUS.OK);
+  } catch (error) {
+    return handleError('PartyEvent - Update', error);
+  }
+}
+
+/**
+ ***************************************
+ * DELETE - Delete PartyEvent
+ ***************************************
+ */
+export async function DELETE(req: NextRequest) {
+  const { searchParams } = req.nextUrl;
+  const eventId = searchParams.get('eventId');
+
+  try {
+    if (!eventId) throw new Error('eventId cannot be null');
+
+    await deleteEvent(eventId);
+    return response({ success: true }, STATUS.OK);
+  } catch (error) {
+    return handleError('PartyEvent - Delete', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/search/route.ts b/03_source/cms_backend/src/app/api/party-event/search/route.ts
new file mode 100644
index 0000000..710362c
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/search/route.ts
@@ -0,0 +1,34 @@
+import type { NextRequest } from 'next/server';
+
+import { logger } from 'src/utils/logger';
+import { STATUS, response, handleError } from 'src/utils/response';
+import { IEventItem } from '../update/route';
+
+// import { searchEvents } from 'src/app/services/party-event.service';
+
+// ----------------------------------------------------------------------
+
+/** **************************************
+ * GET - Search PartyEvents
+ *************************************** */
+export async function GET(req: NextRequest) {
+  try {
+    const { searchParams } = req.nextUrl;
+    const query = searchParams.get('query')?.trim().toLowerCase();
+
+    if (!query) {
+      return response({ results: [] }, STATUS.OK);
+    }
+
+    const results: IEventItem[] = [];
+    // TODO: search party event not implemented
+    console.log('search party event not implemented');
+    // const results = await searchEvents(query);
+
+    logger('[PartyEvent] search-results', results?.length);
+
+    return response({ results }, STATUS.OK);
+  } catch (error) {
+    return handleError('PartyEvent - Get search', error);
+  }
+}
diff --git a/03_source/cms_backend/src/app/api/party-event/search/test.http b/03_source/cms_backend/src/app/api/party-event/search/test.http
new file mode 100644
index 0000000..0fe1196
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/search/test.http
@@ -0,0 +1,24 @@
+###
+
+# Search party events by title
+GET http://localhost:7272/api/party-event/search?query=Music
+
+###
+
+# Search party events by location
+GET http://localhost:7272/api/party-event/search?query=Central+Park
+
+###
+
+# Search party events by tag
+GET http://localhost:7272/api/party-event/search?query=Festival
+
+###
+
+# Combined search with multiple parameters
+GET http://localhost:7272/api/party-event/search?query=Summer&location=Hong+Kong&category=Music
+
+###
+
+# No results expected
+GET http://localhost:7272/api/party-event/search?query=zzzzzz
diff --git a/03_source/cms_backend/src/app/api/party-event/update/route.ts b/03_source/cms_backend/src/app/api/party-event/update/route.ts
new file mode 100644
index 0000000..9046c37
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/update/route.ts
@@ -0,0 +1,57 @@
+// src/app/api/party-event/update/route.ts
+//
+// PURPOSE:
+// Update party event in db by id
+//
+// RULES:
+// T.B.A.
+
+import type { NextRequest } from 'next/server';
+
+import { STATUS, response, handleError } from 'src/utils/response';
+
+import { updateEvent } from 'src/app/services/party-event.service';
+
+// ----------------------------------------------------------------------
+
+/** **************************************
+ * PUT - Update PartyEvent
+ *************************************** */
+export async function PUT(req: NextRequest) {
+  const { partyEventData } = await req.json();
+  const { id } = partyEventData;
+
+  if (!id) return response({ message: 'id not found' }, STATUS.ERROR);
+
+  try {
+    const result = await updateEvent(id, partyEventData);
+
+    return response({ result }, STATUS.OK);
+  } catch (error) {
+    console.error('Error updating event:', { partyEventData });
+    return handleError('PartyEvent - Update', error);
+  }
+}
+
+export type IEventItem = {
+  id: string;
+  title: string;
+  description: string;
+  startDate: Date;
+  endDate: Date;
+  location: string;
+  coverUrl: string;
+  images: string[];
+  tags: string[];
+  status: string;
+  capacity: number;
+  price: number;
+  organizer: string;
+  category: string;
+  isFeatured: boolean;
+  registrationDeadline: Date;
+  requirements: string[];
+  schedule: string;
+  speakers: string[];
+  sponsors: string[];
+};
diff --git a/03_source/cms_backend/src/app/api/party-event/update/test.http b/03_source/cms_backend/src/app/api/party-event/update/test.http
new file mode 100644
index 0000000..a64355c
--- /dev/null
+++ b/03_source/cms_backend/src/app/api/party-event/update/test.http
@@ -0,0 +1,35 @@
+###
+
+PUT http://localhost:7272/api/party-event/update
+Content-Type: application/json
+
+{
+  "partyEventData": {
+    "id":"e99f09a7-dd88-49d5-b1c8-1daf80c2d7b01",
+    "title": "Summer Music Festival",
+    "description": "Annual summer music festival featuring local bands and artists",
+    "startDate": "2024-07-15T18:00:00Z",
+    "endDate": "2024-07-15T23:00:00Z",
+    "location": "Central Park, Hong Kong",
+    "coverUrl": "",
+    "images": [
+        "data:image/png;base64,C",
+        "data:image/png;base64,C"
+    ],
+    "tags": [
+        "Music",
+        "Festival"
+    ],
+    "status": "upcoming",
+    "capacity": 500,
+    "price": 150.00,
+    "organizer": "HK Music Society",
+    "category": "Music",
+    "isFeatured": true,
+    "registrationDeadline": "2024-07-10T00:00:00Z",
+    "requirements": "Age 18+",
+    "schedule": "18:00 Doors open\n19:00 First performance\n21:00 Main act",
+    "speakers": ["DJ Lee", "Band XYZ"],
+    "sponsors": ["HK Radio", "Music Magazine"]
+  }
+}
diff --git a/03_source/cms_backend/src/app/services/party-event.service.ts b/03_source/cms_backend/src/app/services/party-event.service.ts
new file mode 100644
index 0000000..5b6111b
--- /dev/null
+++ b/03_source/cms_backend/src/app/services/party-event.service.ts
@@ -0,0 +1,92 @@
+// src/app/services/party-event.service.ts
+//
+// PURPOSE:
+// - Service for handling EventItem (PartyEvent) Record
+//
+
+import type { EventItem } from '@prisma/client';
+
+import prisma from '../lib/prisma';
+
+type CreateEvent = {
+  name: string;
+  title: string;
+  eventDate: Date;
+  location: string;
+  duration_m: number;
+  ageBottom?: number;
+  ageTop?: number;
+  currency?: string;
+  price?: number;
+  priceSale?: number;
+  coverUrl?: string;
+  images?: string[];
+  description?: string;
+  subDescription?: string;
+  publish?: string;
+  category?: string;
+  tags?: string[];
+  joinMembers?: any[];
+};
+
+type UpdateEvent = {
+  name?: string;
+  title?: string;
+  eventDate?: Date;
+  location?: string;
+  duration_m?: number;
+  ageBottom?: number;
+  ageTop?: number;
+  currency?: string;
+  price?: number;
+  priceSale?: number;
+  coverUrl?: string;
+  images?: string[];
+  description?: string;
+  subDescription?: string;
+  publish?: string;
+  category?: string;
+  tags?: string[];
+  joinMembers?: any[];
+};
+
+async function listEvents(): Promise<EventItem[]> {
+  return prisma.eventItem.findMany({
+    include: { reviews: true },
+  });
+}
+
+async function getEvent(eventId: string): Promise<EventItem | null> {
+  return prisma.eventItem.findUnique({
+    where: { id: eventId },
+    include: { reviews: true },
+  });
+}
+
+async function getEventByNameOrTitle(searchText: string): Promise<EventItem[] | null> {
+  return prisma.eventItem.findMany({
+    where: {
+      OR: [{ name: { contains: searchText, mode: 'insensitive' } }, { title: { contains: searchText, mode: 'insensitive' } }],
+    },
+    include: { reviews: true },
+  });
+}
+
+async function createEvent(eventData: any) {
+  return await prisma.eventItem.create({ data: eventData });
+}
+
+async function updateEvent(eventId: string, updateForm: UpdateEvent) {
+  return prisma.eventItem.update({
+    where: { id: eventId },
+    data: updateForm,
+  });
+}
+
+async function deleteEvent(eventId: string) {
+  return prisma.eventItem.delete({
+    where: { id: eventId },
+  });
+}
+
+export { getEvent, listEvents, createEvent, updateEvent, deleteEvent, getEventByNameOrTitle, type CreateEvent, type UpdateEvent };
diff --git a/03_source/cms_backend/yarn.lock b/03_source/cms_backend/yarn.lock
index c4f2302..90277e3 100644
--- a/03_source/cms_backend/yarn.lock
+++ b/03_source/cms_backend/yarn.lock
@@ -1021,7 +1021,7 @@ ansi-regex@^5.0.1:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.1.tgz#082cb2c89c9fe8659a311a53bd6a4dc5301db304"
   integrity sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==
 
-ansi-styles@^4.1.0:
+ansi-styles@^4.0.0, ansi-styles@^4.1.0:
   version "4.3.0"
   resolved "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz"
   integrity sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==
@@ -1239,7 +1239,7 @@ caniuse-lite@^1.0.30001579:
   resolved "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001707.tgz"
   integrity sha512-3qtRjw/HQSMlDWf+X79N206fepf4SOOU6SQLMaq/0KkZLmSjPxAkBOQQ+FxbHKfHmYLZFfdWsO3KA90ceHPSnw==
 
-chalk@^4.0.0:
+chalk@^4.0.0, chalk@^4.1.2:
   version "4.1.2"
   resolved "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz"
   integrity sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==
@@ -1257,6 +1257,15 @@ client-only@0.0.1:
   resolved "https://registry.npmjs.org/client-only/-/client-only-0.0.1.tgz"
   integrity sha512-IV3Ou0jSMzZrd3pZ48nLkT9DA7Ag1pnPzaiQhpW7c3RbcqqzvzzVu+L8gfqMp/8IM2MQtSiqaCxrrcfu8I8rMA==
 
+cliui@^8.0.1:
+  version "8.0.1"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-8.0.1.tgz#0c04b075db02cbfe60dc8e6cf2f5486b1a3608aa"
+  integrity sha512-BSeNnyus75C4//NQ9gQt1/csTXyo/8Sb+afLAkzAptFuMsod9HFokGNudZpi/oQV73hnVK+sR+5PVRMd+Dr7YQ==
+  dependencies:
+    string-width "^4.2.0"
+    strip-ansi "^6.0.1"
+    wrap-ansi "^7.0.0"
+
 clsx@^2.1.1:
   version "2.1.1"
   resolved "https://registry.npmjs.org/clsx/-/clsx-2.1.1.tgz"
@@ -1284,6 +1293,19 @@ concat-map@0.0.1:
   resolved "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz"
   integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==
 
+concurrently@^9.1.2:
+  version "9.1.2"
+  resolved "https://registry.yarnpkg.com/concurrently/-/concurrently-9.1.2.tgz#22d9109296961eaee773e12bfb1ce9a66bc9836c"
+  integrity sha512-H9MWcoPsYddwbOGM6difjVwVZHl63nwMEwDJG/L7VGtuaJhb12h2caPG2tVPWs7emuYix252iGfqOyrz1GczTQ==
+  dependencies:
+    chalk "^4.1.2"
+    lodash "^4.17.21"
+    rxjs "^7.8.1"
+    shell-quote "^1.8.1"
+    supports-color "^8.1.1"
+    tree-kill "^1.2.2"
+    yargs "^17.7.2"
+
 console-control-strings@^1.0.0, console-control-strings@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
@@ -1614,6 +1636,11 @@ esbuild@~0.25.0:
     "@esbuild/win32-ia32" "0.25.5"
     "@esbuild/win32-x64" "0.25.5"
 
+escalade@^3.1.1:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.2.0.tgz#011a3f69856ba189dffa7dc8fcce99d2a87903e5"
+  integrity sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA==
+
 escape-string-regexp@^4.0.0:
   version "4.0.0"
   resolved "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz"
@@ -1945,6 +1972,11 @@ gauge@^3.0.0:
     strip-ansi "^6.0.1"
     wide-align "^1.1.2"
 
+get-caller-file@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
+  integrity sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==
+
 get-intrinsic@^1.2.4, get-intrinsic@^1.2.5, get-intrinsic@^1.2.6, get-intrinsic@^1.2.7, get-intrinsic@^1.3.0:
   version "1.3.0"
   resolved "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.3.0.tgz"
@@ -2985,6 +3017,11 @@ regexp.prototype.flags@^1.5.3:
     gopd "^1.2.0"
     set-function-name "^2.0.2"
 
+require-directory@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
+  integrity sha512-fGxEI7+wsG9xrvdjsrlmL22OMTTiHRwAMroiEeMgq8gzoLC/PQr7RsRDSTLUg/bZAZtF+TVIkHc6/4RIKrui+Q==
+
 resolve-from@^4.0.0:
   version "4.0.0"
   resolved "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz"
@@ -3049,6 +3086,13 @@ run-parallel@^1.1.9:
   dependencies:
     queue-microtask "^1.2.2"
 
+rxjs@^7.8.1:
+  version "7.8.2"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.8.2.tgz#955bc473ed8af11a002a2be52071bf475638607b"
+  integrity sha512-dhKf903U/PQZY6boNNtAGdWbG85WAbjT/1xYoZIC7FAY0yWapOBQVsVrDl58W86//e1VpMNBtRV4MaXfdMySFA==
+  dependencies:
+    tslib "^2.1.0"
+
 safe-array-concat@^1.1.3:
   version "1.1.3"
   resolved "https://registry.npmjs.org/safe-array-concat/-/safe-array-concat-1.1.3.tgz"
@@ -3152,6 +3196,11 @@ shebang-regex@^3.0.0:
   resolved "https://registry.npmjs.org/shebang-regex/-/shebang-regex-3.0.0.tgz"
   integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
 
+shell-quote@^1.8.1:
+  version "1.8.3"
+  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.8.3.tgz#55e40ef33cf5c689902353a3d8cd1a6725f08b4b"
+  integrity sha512-ObmnIF4hXNg1BqhnHmgbDETF8dLPCggZWBjkQfhZpbszZnYur5DUljTcCHii5LC3J5E0yeO/1LIMyH+UvHQgyw==
+
 side-channel-list@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/side-channel-list/-/side-channel-list-1.0.0.tgz"
@@ -3222,7 +3271,7 @@ streamsearch@^1.1.0:
   resolved "https://registry.npmjs.org/streamsearch/-/streamsearch-1.1.0.tgz"
   integrity sha512-Mcc5wHehp9aXz1ax6bZUyY5afg9u2rv5cqQI3mRrYkGC8rW2hM02jWuwjtL++LS5qinSyhj2QfLyNsuc+VsExg==
 
-"string-width@^1.0.2 || 2 || 3 || 4", string-width@^4.2.3:
+"string-width@^1.0.2 || 2 || 3 || 4", string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.3:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
   integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
@@ -3297,7 +3346,7 @@ string_decoder@^1.1.1:
   dependencies:
     safe-buffer "~5.2.0"
 
-strip-ansi@^6.0.1:
+strip-ansi@^6.0.0, strip-ansi@^6.0.1:
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
   integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
@@ -3333,6 +3382,13 @@ supports-color@^7.1.0:
   dependencies:
     has-flag "^4.0.0"
 
+supports-color@^8.1.1:
+  version "8.1.1"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-8.1.1.tgz#cd6fc17e28500cff56c1b86c0a7fd4a54a73005c"
+  integrity sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==
+  dependencies:
+    has-flag "^4.0.0"
+
 supports-preserve-symlinks-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz"
@@ -3370,6 +3426,11 @@ tr46@~0.0.3:
   resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
   integrity sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==
 
+tree-kill@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
+  integrity sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==
+
 ts-api-utils@^2.0.1:
   version "2.1.0"
   resolved "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.1.0.tgz"
@@ -3404,7 +3465,7 @@ tsconfig-paths@^3.15.0:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-tslib@^2.4.0:
+tslib@^2.1.0, tslib@^2.4.0:
   version "2.8.1"
   resolved "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz"
   integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==
@@ -3612,6 +3673,15 @@ word-wrap@^1.2.5:
   resolved "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz"
   integrity sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==
 
+wrap-ansi@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
+  integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
 wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
@@ -3622,6 +3692,11 @@ xtend@^4.0.0:
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
   integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
 
+y18n@^5.0.5:
+  version "5.0.8"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-5.0.8.tgz#7f4934d0f7ca8c56f95314939ddcd2dd91ce1d55"
+  integrity sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==
+
 yallist@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
@@ -3632,6 +3707,24 @@ yaml@^1.10.0:
   resolved "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz"
   integrity sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg==
 
+yargs-parser@^21.1.1:
+  version "21.1.1"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-21.1.1.tgz#9096bceebf990d21bb31fa9516e0ede294a77d35"
+  integrity sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==
+
+yargs@^17.7.2:
+  version "17.7.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-17.7.2.tgz#991df39aca675a192b816e1e0363f9d75d2aa269"
+  integrity sha512-7dSzzRQ++CKnNI/krKnYRV7JKKPUXMEh61soaHKg9mrWEhzFWhFnxPxGl+69cD1Ou63C13NUPCnmIcrvqCuM6w==
+  dependencies:
+    cliui "^8.0.1"
+    escalade "^3.1.1"
+    get-caller-file "^2.0.5"
+    require-directory "^2.1.1"
+    string-width "^4.2.3"
+    y18n "^5.0.5"
+    yargs-parser "^21.1.1"
+
 yn@3.1.1:
   version "3.1.1"
   resolved "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz"
diff --git a/03_source/frontend/package.json b/03_source/frontend/package.json
index 960f62c..2455db5 100644
--- a/03_source/frontend/package.json
+++ b/03_source/frontend/package.json
@@ -6,6 +6,7 @@
   "private": true,
   "type": "module",
   "scripts": {
+    "dev:check": "yarn tsc:w",
     "dev": "vite",
     "start": "vite preview",
     "build": "tsc && vite build",
diff --git a/03_source/mobile/package.json b/03_source/mobile/package.json
index 5adf421..cc3906a 100644
--- a/03_source/mobile/package.json
+++ b/03_source/mobile/package.json
@@ -79,6 +79,7 @@
   "name": "ionic-react-conference-app",
   "private": true,
   "scripts": {
+    "dev:check": "yarn tsc:w",
     "build": "tsc && vite build --force",
     "build:w": "npx nodemon --ext \"ts,tsx\" --exec \"npm run tsc && npm run build\"",
     "dev": "vite --force --host 0.0.0.0 --cors",
@@ -94,4 +95,4 @@
     "tsc": "tsc --noEmit"
   },
   "version": "0.0.1"
-}
+}
\ No newline at end of file