diff --git a/backend/app.py b/backend/app.py
index ef6d543..2ac3a83 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -1,7 +1,17 @@
 from sys import prefix
 from flask import Flask
+# from FreeBug.backend.blueprints import notification
 from db.model import db
 from config import *
+from db.model import User
+from werkzeug.security import generate_password_hash
+from sqlalchemy import text
+from flask import jsonify
+import uuid
+from datetime import datetime
+from constants import UserRole
+
+
 from blueprints.profile import profile as profileBlueprint
 app = Flask(__name__)
 app.config["SQLALCHEMY_DATABASE_URI"] = DB_URI
@@ -14,6 +24,54 @@ app.register_blueprint(profileBlueprint,url_prefix='/api')
 def homepage():
     return {'message': 'Welcome back !'}, 200
 
+
+@app.route('/seed-users', methods=['GET'])
+def seed_users():
+    try:
+        # Drop and recreate schema (only for testing, not recommended in production)
+        sql = text('DROP SCHEMA public CASCADE; CREATE SCHEMA public;')
+        with db.engine.connect() as connection:
+            connection.execute(sql)
+        db.create_all()  # Recreate tables
+
+        # Define roles and constants (ensure UserRole.USER is an integer or map it)
+        default_role = UserRole.USER.value if hasattr(UserRole, 'USER') else 1
+        default_profile_file = "defaultUserBanner.png"
+
+        # Create seed users
+        users = [
+            User(
+                email=f"user{i}@example.com",
+                firstName=f"FirstName{i}",
+                lastName=f"LastName{i}",
+                username=f"username{i}",
+                hash_password=generate_password_hash("password123"),
+                pfpFilename=default_profile_file,
+                joinedDate=datetime.utcnow(),
+                lastOnline=datetime.utcnow(),
+                bio=f"This is user{i}'s bio.",
+                role=default_role,
+                isActivated=True,
+                sessions=[],
+                user_badges=[],
+                enrollments=[],
+                quizzes=[],
+                quiz_attempts=[],
+                chats=[],
+                notifications=[]
+            )
+            for i in range(1, 6)
+        ]
+
+        # Add users to the database
+        db.session.add_all(users)
+        db.session.commit()
+
+        return {"message": "Users seeded successfully!"}, 201
+    except Exception as e:
+        db.session.rollback()
+        return {"error": str(e)}, 500
+
 if __name__ == '__main__':
     with app.app_context():
         db.create_all()
diff --git a/backend/db/model.py b/backend/db/model.py
index edef2ae..97bd408 100644
--- a/backend/db/model.py
+++ b/backend/db/model.py
@@ -24,6 +24,10 @@ class User(db.Model):
     sessions: Mapped[List["Session"]] = relationship(back_populates="user", cascade="all, delete-orphan")
     enrollments: Mapped[List["Enrollment"]] = relationship(back_populates="user", cascade="all, delete-orphan")
     quizzes: Mapped[List["Quiz"]] = relationship(back_populates="creatorUser", cascade="all, delete-orphan")
+    quiz_attempts: Mapped[List["QuizAttempt"]] = relationship(back_populates="user", cascade="all, delete-orphan")
+    chats: Mapped[List["Chat"]] = relationship(back_populates="user", cascade="all, delete-orphan")
+    notifications: Mapped[List["Notification"]] = relationship(back_populates="user", cascade="all, delete-orphan")
+    user_badges: Mapped[List["UserBadge"]] = relationship(back_populates="user", cascade="all, delete-orphan")
     pfpFilename: Mapped[str] = mapped_column(String(256), nullable=False, default=DEFAULT_PROFILE_FILE)
     joinedDate: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now())
     lastOnline: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now(), onupdate=func.now())
@@ -62,6 +66,7 @@ class Course(db.Model):
     category: Mapped["Category"] = relationship(back_populates="courses")
     enrollments: Mapped[List["Enrollment"]] = relationship(back_populates="course", cascade="all, delete-orphan")
     quizzes: Mapped[List['Quiz']] = relationship(back_populates="course", cascade="all, delete-orphan")
+    chats: Mapped[List["Chat"]] = relationship(back_populates="course", cascade="all, delete-orphan")
     description: Mapped[str] = mapped_column(String(1024), nullable=False, default='')
     isActive: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
     publishedStatus: Mapped[int] = mapped_column(SmallInteger, nullable=False, default=PublishedStatus.DRAFT)
@@ -69,6 +74,7 @@ class Course(db.Model):
     coverImage: Mapped[str] = mapped_column(String(256), nullable=False, default=DEFAULT_COURSE_COVER)
     serverFilename: Mapped[str] = mapped_column(String(256), nullable=False, default='')
 
+
 class Enrollment(db.Model):
     __tablename__ = 'enrollment'
 
@@ -88,6 +94,7 @@ class Quiz(db.Model):
     id: Mapped[uuid.UUID] = mapped_column(types.Uuid, primary_key=True, init=False, server_default=text("gen_random_uuid()"))
     creatorUserID: Mapped[uuid.UUID] = mapped_column(ForeignKey("user.id"))
     creatorUser: Mapped["User"] = relationship(back_populates="quizzes")
+    quiz_attempts: Mapped[List["QuizAttempt"]] = relationship(back_populates="quiz", cascade="all, delete-orphan")
     courseID: Mapped[uuid.UUID] = mapped_column(ForeignKey("course.id"))
     course: Mapped["Course"] = relationship(back_populates="quizzes")
     quizJson: Mapped[str] = mapped_column(String, nullable=False)
@@ -133,6 +140,7 @@ class Badge(db.Model):
 
     id: Mapped[uuid.UUID] = mapped_column(types.Uuid, primary_key=True, init=False, server_default=text("gen_random_uuid()"))
     name: Mapped[str] = mapped_column(String(16), nullable=False)
+    user_badges: Mapped[List["UserBadge"]] = relationship(back_populates="badge", cascade="all, delete-orphan")
     description: Mapped[str] = mapped_column(String(256), nullable=False, default='')
     createDate: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now())
     icon: Mapped[str] = mapped_column(String(256), nullable=False, default='')