diff --git a/server/__pycache__/data_structs.cpython-311.pyc b/server/__pycache__/data_structs.cpython-311.pyc
index 4163607b4b1b56fb78c7310f4a0863892bb42ce3..928637c84a08e29d4863306f8637968ec21e14cb 100644
Binary files a/server/__pycache__/data_structs.cpython-311.pyc and b/server/__pycache__/data_structs.cpython-311.pyc differ
diff --git a/server/data_structs.py b/server/data_structs.py
index 26428d4f6e4fb7d187ca34b003692c297a33d184..e35a41e4dc946067e27775f8fbc6f465a664910b 100644
--- a/server/data_structs.py
+++ b/server/data_structs.py
@@ -76,4 +76,5 @@ class MarkerTemplate:
             'longitude': self.longitude,
             'size': self.size,
             'color': self.color,
-        }
\ No newline at end of file
+        }
+    
\ No newline at end of file
diff --git a/server/database/add_to_db.py b/server/database/add_to_db.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/server/main.py b/server/main.py
index ace59dd7c48a455f0c2d901fed9741c822d006d0..6074e4021613f227c582b959ad30f48d6ccc49bb 100644
--- a/server/main.py
+++ b/server/main.py
@@ -1,30 +1,33 @@
-from flask import Flask, jsonify
+from flask import Flask
 from http.server import HTTPServer, BaseHTTPRequestHandler
 from pymongo import MongoClient
 from pymongo.server_api import ServerApi
 from consts import DB_NAME, COLLECTION, MONGO_URI, MONGO_CERT_PATH, SSL_CERT_PATH, SSL_KEY_PATH, HOST, PORT
 from map.get_markers import get_markers
-import atexit
+from data_structs import Measurement, MarkerTemplate, DateAndTime, Sensor
 import ssl
 import keyboard
+from flask import json
 
 app = Flask(__name__)
 terminate_server = 0
 
-"""
+
 # Initialise MongoDB connection
-try:
-    client = MongoClient(MONGO_URI,
-                         tls=True,
-                         tlsCertificateKeyFile=MONGO_CERT_PATH,
-                         server_api=ServerApi('1'))
+def initDatabase():
+    try:
+        client = MongoClient(MONGO_URI,
+                            tls=True,
+                            tlsCertificateKeyFile=MONGO_CERT_PATH,
+                            server_api=ServerApi('1'))
+
+        db = client[DB_NAME]
+        collection = db[COLLECTION]
+        print("Connected to MongoDB")
+        return client
+    except Exception as e:
+        print(f"Failed to connect to MongoDB: {e}")
 
-    db = client[DB_NAME]
-    collection = db[COLLECTION]
-    print("Connected to MongoDB")
-except Exception as e:
-    print(f"Failed to connect to MongoDB: {e}")
-"""
     
 # Define HTTP class
 class IceHTTP(BaseHTTPRequestHandler):
@@ -60,7 +63,38 @@ def on_key_press(server, event):
 
 # Start a server on port 8443 using self defined HTTP class
 if __name__ == "__main__":
-    print("Starting server on port ", PORT)
+    # Initialise database connection
+    client = initDatabase()
+
+    db = client[DB_NAME]
+    testCol = db["TestCollection"]
+
+    # NB: temporary test data
+    sensor1 = Sensor(ID=1, type="Type1", active=True)
+    sensor2 = Sensor(ID=2, type="Type2", active=False)
+
+    datetime1 = DateAndTime(2023, 12, 31, 15, 43)
+    datetime2 = DateAndTime(2024, 1, 15, 12, 2)
+    datetime3 = DateAndTime(2024, 1, 31, 18, 10)
+
+    measurement1 = Measurement(longitude=10.9771, latitude=60.7066, datetime=datetime1, sensor=sensor1, 
+                                   precipitation=0.0, thickness=0.0, max_weight=0.0, safety_level=0.0, accuracy=2.5)
+    measurement2 = Measurement(longitude=10.8171, latitude=60.6366, datetime=datetime2, sensor=sensor2, 
+                                   precipitation=0.0, thickness=0.0, max_weight=0.0, safety_level=0.0, accuracy=1.5)
+    measurement3 = Measurement(longitude=10.8471, latitude=60.7366, datetime=datetime3, sensor=sensor1, 
+                                   precipitation=0.0, thickness=0.0, max_weight=0.0, safety_level=0.0, accuracy=4.0)
+    
+    testData = [
+            MarkerTemplate(measurement1, 30.0-measurement1.accuracy, "Green"),
+            MarkerTemplate(measurement2, 10.0-measurement2.accuracy, "Red"),
+            MarkerTemplate(measurement3, 20.0-measurement3.accuracy, "Yellow"),
+        ]
+    
+    data_to_insert = [marker_template.to_dict() for marker_template in testData]
+
+    for element in data_to_insert:
+        insert_result = testCol.insert_one(element)
+
     try:
         # Load SSL certificate and private key
         ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
diff --git a/server/map/__pycache__/get_markers.cpython-311.pyc b/server/map/__pycache__/get_markers.cpython-311.pyc
index fe067d8d451136985eb529449e19ff358e97b22b..0a4fa70dc8d5db158534773773e880a98e27b1ea 100644
Binary files a/server/map/__pycache__/get_markers.cpython-311.pyc and b/server/map/__pycache__/get_markers.cpython-311.pyc differ