architecture*

\documentclass[tikz,border=5pt]{standalone}
\usetikzlibrary{shapes.geometric, arrows, positioning}

% Define styles
\tikzstyle{layer} = [rectangle, draw, rounded corners, fill=blue!10, minimum width=2cm, minimum height=1cm, text centered, font=\large]
\tikzstyle{module} = [rectangle, draw, fill=green!20, rounded corners, minimum width=3cm, minimum height=1cm, text centered, font=\normalsize]
\tikzstyle{db} = [rectangle, draw, fill=red!20, minimum height=1.2cm, minimum width=3cm, text centered, font=\normalsize] % Changed to rectangle
\tikzstyle{ext} = [rectangle, draw, fill=yellow!30, minimum width=3cm, minimum height=1cm, text centered, font=\normalsize]
\tikzstyle{arrow} = [thick,->,>=stealth]

\begin{document}
\begin{tikzpicture}[node distance=0.5cm and 0.5cm]

% User Interface Layer
\node (uiLayer) [layer, yshift=0cm] {User Interface Layer};
\node (customerUI) [module, below of=uiLayer, yshift=-1.5cm, xshift=-4cm] {Customer Portal};
\node (officerUI) [module, below of=uiLayer, yshift=-1.5cm, xshift=4cm] {Officer Portal};

% Application Layer
\node (appLayer) [layer, below of=customerUI, yshift=-1.5cm, xshift=4cm] {Application Layer};
\node (booking) [module, below of=appLayer, yshift=-1.5cm, xshift=-6cm] {Booking};
\node (tracking) [module, below of=appLayer, yshift=-1.5cm, xshift=-2cm] {Tracking};
\node (scheduling) [module, below of=appLayer, yshift=-1.5cm, xshift=2cm] {Scheduling};
\node (notification) [module, below of=appLayer, yshift=-1.5cm, xshift=6cm] {Notifications};

% Service Layer
\node (serviceLayer) [layer, below of=tracking, yshift=-2cm, xshift=2cm] {Service Layer};
\node (orderService) [module, below of=serviceLayer, yshift=-1.5cm, xshift=-4cm] {Order Management};
\node (paymentService) [module, below of=serviceLayer, yshift=-1.5cm, xshift=0cm] {Payment Processing};
\node (notificationService) [module, below of=serviceLayer, yshift=-1.5cm, xshift=4cm] {Notification Service};

% Database Layer
\node (dbLayer) [layer, below of=paymentService, yshift=-2cm] {Database Layer};
\node (orderDB) [db, below of=dbLayer, yshift=-1.5cm, xshift=-4cm] {Order DB};
\node (paymentDB) [db, below of=dbLayer, yshift=-1.5cm, xshift=0cm] {Payment DB};
\node (notificationDB) [db, below of=dbLayer, yshift=-1.5cm, xshift=4cm] {Notification DB};

% External Systems
\node (smsGateway) [ext, below of=notificationDB, yshift=-2cm, xshift=-4cm] {SMS Gateway};
\node (paymentGateway) [ext, below of=notificationDB, yshift=-2cm, xshift=4cm] {Payment Gateway};

% Arrows (UI Layer to Application Layer)
\draw [arrow] (customerUI.south) -- ++(0,-0.5) -| node[above, font=\small] {Book Order} (booking.north);
\draw [arrow] (customerUI.south) -- ++(0,-2.2) -| node[below, font=\small] {Track Order} (tracking.north);
\draw [arrow] (officerUI.south) -- ++(0,-2.2) -| node[below, font=\small] {Schedule Parcel} (scheduling.north);
\draw [arrow] (officerUI.south) -- ++(0,-0.5) -| node[above, font=\small] {Send Notifications} (notification.north);

% Arrows (Application Layer to Service Layer)
\draw [arrow] (booking.south) -- ++(0,-0.5) -| (orderService.north);
\draw [arrow] (tracking.south) -- ++(0,-0.5) -| (orderService.north);
\draw [arrow] (notification.south) -- ++(0,-0.5) -| (notificationService.north);
\draw [arrow] (scheduling.south) -- ++(0,-0.5) -| (orderService.north);

% Arrows (Service Layer to Database Layer)
\draw [arrow] (orderService.south) -- ++(0,-0.5) -| (orderDB.north);
\draw [arrow] (paymentService.south) -- ++(0,-0.5) -| (paymentDB.north);
\draw [arrow] (notificationService.south) -- ++(0,-0.5) -| (notificationDB.north);

% Arrows (Service Layer to External Systems)
\draw [arrow] (notificationService.south) -- ++(0,-0.5) -| (smsGateway.north);
\draw [arrow] (paymentService.south) -- ++(0,-0.5) -| (paymentGateway.north);

\end{tikzpicture}
\end{document}

=================
data flow****

\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{shapes.geometric, arrows}

% Define styles
\tikzstyle{entity} = [rectangle, draw, minimum width=3cm, minimum height=1cm, text centered, rounded corners, fill=red!30, font=\normalsize]
\tikzstyle{process} = [circle, draw, minimum size=1cm, text centered, fill=blue!30, font=\normalsize]
\tikzstyle{data} = [trapezium, trapezium left angle=70, trapezium right angle=110, draw, text centered, fill=green!30, minimum width=2.5cm, font=\normalsize]
\tikzstyle{arrow} = [thick,->,>=stealth]

\begin{document}
\begin{tikzpicture}[node distance=2cm and 3cm]

% Entities
\node (customer) [entity] {Customer};
\node (officer) [entity, right of=customer, xshift=8cm] {Officer};

% Processes
\node (bookOrder) [process, below of=customer, yshift=-2cm] {Book Order};
\node (makePayment) [process, right of=bookOrder, xshift=4cm] {Make Payment};
\node (trackOrder) [process, below of=bookOrder, yshift=-3cm] {Track Order};
\node (manageParcels) [process, below of=officer, yshift=-2cm] {Manage Parcels};
\node (sendNotification) [process, below of=manageParcels, yshift=-2.5cm] {Send Notification};

% Data Stores
\node (orderDB) [data, below of=trackOrder, yshift=-2cm] {Order Database};
\node (paymentDB) [data, below of=makePayment, yshift=-2cm] {Payment Database};
\node (notificationDB) [data, below of=sendNotification, yshift=-2cm] {Notification Logs};

% Arrows: Customer Path
\draw [arrow] (customer.south) -- ++(0,-1) -| node[anchor=north, font=\small] {Order Details} (bookOrder.north);
\draw [arrow] (bookOrder.east) -- (makePayment.west) node[midway, above, font=\small] {Payment Initiation};
\draw [arrow] (makePayment.south) -- (paymentDB.north) node[midway, right, font=\small] {Payment Confirmation};
\draw [arrow] (customer.south) -- ++(0,-6.5) -| node[anchor=north, font=\small] {Tracking Request} (trackOrder.north);
\draw [arrow] (trackOrder.south) -- (orderDB.north) node[midway, right, font=\small] {Fetch Status};

% Arrows: Officer Path
\draw [arrow] (officer.south) -- ++(0,-1) -| node[anchor=west, font=\small] {Parcel Info} (manageParcels.north);
\draw [arrow] (manageParcels.south) -- (orderDB.east) node[midway, left, font=\small] {Update Order Status};
\draw [arrow] (manageParcels.south) -- ++(0,-1.5) -| (sendNotification.north) node[midway, left, font=\small] {Trigger Notification};
\draw [arrow] (sendNotification.south) -- (notificationDB.north) node[midway, right, font=\small] {Log Notification};

\end{tikzpicture}
\end{document}

flowchart n er model

\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{shapes.geometric, arrows}
\usetikzlibrary{positioning}

\tikzstyle{startstop} = [rectangle, rounded corners, minimum width=3cm, minimum height=1cm, text centered, draw=black, fill=red!30]
\tikzstyle{process} = [rectangle, minimum width=3cm, minimum height=1cm, text centered, draw=black, fill=blue!30]
\tikzstyle{decision} = [diamond, minimum width=3cm, minimum height=1cm, text centered, draw=black, fill=green!30]
\tikzstyle{arrow} = [thick,->,>=stealth]

\begin{document}
\begin{tikzpicture}[node distance=2.5cm]

\node (start) [startstop] {Start};
\node (login) [process, below of=start] {Login};
\node (role) [decision, below of=login] {User Role?};
\node (customer) [process, below of=role, yshift=-1cm] {Customer Actions};
\node (officer) [process, right of=role, xshift=5cm] {Officer Actions};
\node (book) [process, below of=customer] {Book Order};
\node (track) [process, below of=book] {Track Order Status};
\node (schedule) [process, below of=officer, yshift=-1cm] {Schedule Parcels};
\node (view) [process, below of=schedule] {View All Orders};
\node (update) [process, below of=view] {Update Order Status};
\node (end) [startstop, below of=track, yshift=-1cm] {End};

\draw [arrow] (start) -- (login);
\draw [arrow] (login) -- (role);
\draw [arrow] (role.south) -- ++(0,-0.5) |- (customer.north);
\draw [arrow] (role.east) -- (officer.west);
\draw [arrow] (customer) -- (book);
\draw [arrow] (book) -- (track);
\draw [arrow] (officer) -- (schedule);
\draw [arrow] (schedule) -- (view);
\draw [arrow] (view) -- (update);
\draw [arrow] (track.south) |- ++(0,-1.5) -| (end.north);
\draw [arrow] (update.south) -- (end.north);

\end{tikzpicture}

================
\begin{tikzpicture}[
entity/.style={draw, rectangle, fill=blue!20, text centered, minimum height=1cm, minimum width=2.5cm},
relation/.style={draw, diamond, fill=green!20, aspect=2, text centered},
attribute/.style={draw, ellipse, fill=red!20, text centered},
arrow/.style={->, thick}
]

% Entities
\node (customer) [entity] {Customer};
\node (places) [relation, below of=customer, yshift=-1cm] {Places};
\node (parcel) [entity, below of=places, yshift=-1cm] {Parcel};
\node (manages) [relation, below of=parcel, yshift=-1cm] {Manages};
\node (officer) [entity, below of=manages, yshift=-1cm] {Officer};

% Attributes
\node (custid) [attribute, left=of customer, xshift=-2cm] {CustomerID};
\node (parcelid) [attribute, left=of parcel, xshift=-2cm] {ParcelID};
\node (status) [attribute, right=of parcel, xshift=2cm] {Status};

% Draw connections
\draw [arrow] (customer) -- (places);
\draw [arrow] (places) -- (parcel);
\draw [arrow] (parcel) -- (manages);
\draw [arrow] (manages) -- (officer);
\draw [arrow] (customer) -- (custid);
\draw [arrow] (parcel) -- (parcelid);
\draw [arrow] (parcel) -- (status);

\end{tikzpicture}

\end{document}

==================================
usecase
\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{arrows.meta, positioning}

% Define styles
\tikzstyle{actor} = [draw, ellipse, minimum width=2cm, align=center, font=\normalsize, fill=blue!20]
\tikzstyle{usecase} = [draw, ellipse, minimum width=3.5cm, minimum height=1cm, align=center, font=\normalsize, fill=green!10]
\tikzstyle{arrow} = [thick,->,>=stealth]

\begin{document}
\begin{tikzpicture}[node distance=3cm and 3cm]

% Actors
\node[actor] (customer) {Customer};
\node[actor, below=10cm of customer] (officer) {Officer};

% Use Cases for Customer
\node[usecase, right=of customer, yshift=4cm] (register) {Register\[name, email, number, address]};
\node[usecase, right=of customer, yshift=1cm] (bookOrder) {Book Order};
\node[usecase, right=of customer, yshift=-2cm] (trackOrder) {Track Order};
\node[usecase, right=of customer, yshift=-5cm] (viewHistoryCustomer) {View Booking History};
\node[usecase, right=5cm of trackOrder, yshift=-2cm] (contactSupport) {Contact Support};

% Use Cases for Officer
\node[usecase, right=of officer, yshift=4cm] (trackOrdersOfficer) {Track Orders};
\node[usecase, right=of officer, yshift=1cm] (deliveryStatus) {Delivery Status};
\node[usecase, right=of officer, yshift=-2cm] (pickupSchedule) {Pickup Schedule};
\node[usecase, right=of officer, yshift=-5cm] (viewHistoryOfficer) {View Booking History};

% Connections for Customer
\draw[arrow] (customer) -- (register);
\draw[arrow] (customer) -- (bookOrder);
\draw[arrow] (customer) -- (trackOrder);
\draw[arrow] (customer) -- (viewHistoryCustomer);
\draw[arrow] (customer.east) -- ++(1,0) |- (contactSupport.west);

% Connections for Officer
\draw[arrow] (officer) -- (trackOrdersOfficer);
\draw[arrow] (officer) -- (deliveryStatus);
\draw[arrow] (officer) -- (pickupSchedule);
\draw[arrow] (officer) -- (viewHistoryOfficer);

\end{tikzpicture}
\end{document}

===================
documentation

Parcel Management System Documentation

1. Requirements

Hardware Requirements:

• Processor: Minimum Intel Core i3 or equivalent
• RAM: Minimum 4GB (Recommended 8GB)
• Storage: 10GB free space for project deployment
• Network: Stable internet connection for remote tracking

Software Requirements:

• Operating System: Windows/Linux/MacOS
• Java Development Kit (JDK): Version 8 or higher
• Web Server: Apache Tomcat
• Database: Apache Derby
• Development Environment: Eclipse IDE
• Frameworks/Libraries: JSP (JavaServer Pages)

---

2. Problem Statement

Parcel management for organizations handling multiple users (customers and officers) often lacks streamlined tracking, scheduling, and status reporting functionalities. Existing systems are fragmented and prone to delays due to manual interventions, leading to inefficiencies.

---

3. Proposed Solution

The Parcel Management System is designed to automate parcel-related tasks. Customers can register, place orders, track deliveries, and view booking history. Officers can oversee parcel statuses, manage schedules for pickups and deliveries, and view all order details. This system ensures:

• Efficient parcel tracking and scheduling.
• Real-time status updates for both customers and officers.
• Centralized data storage and retrieval.

---

4. Functional Requirements

• Customer Functionalities:

  • Registration using name, email, phone number, and address.
  • Placing new parcel booking orders.
  • Tracking current orders in real-time.
  • Viewing history of previous bookings.
  • Contacting support for assistance.

• Officer Functionalities:

  • Tracking all parcels in the system.
  • Viewing the delivery status of orders.
  • Scheduling pickups for parcels.
  • Viewing customer booking history for reference.

---

5. Non-Functional Requirements

• Performance: System should handle up to 500 concurrent users without downtime.
• Reliability: Accurate and up-to-date tracking details.
• Usability: User-friendly interface accessible through web browsers.
• Security: Secure login mechanisms and data protection.
• Scalability: Easily extendable to support more users and functionalities.

---

6. Software Details

• Frontend: JSP for designing user interfaces.
• Backend: Java servlets for handling server-side logic.
• Database: Apache Derby for data persistence.
• Server: Apache Tomcat to deploy the application.
• IDE: Eclipse for development and debugging.

---

7. Architecture

The system follows a three-tier architecture:

1. Presentation Layer (Frontend):

   • JSP pages for user interactions.
   • Forms for registration, login, order placement, and feedback.

2. Business Logic Layer (Backend):

   • Java Servlets handle requests and responses.
   • Tracks user sessions and processes functional requirements.

3. Data Layer (Database):

   • Apache Derby stores user information, order details, and system logs.

---

8. Flow of the Project

Customer Flow:

1. Customer registers on the system by providing required details.
2. Logs in using credentials and can:
   • Place a parcel booking order.
   • Track an active order using a unique ID.
   • View the history of past bookings.
   • Contact support for any issues.

Officer Flow:

1. Officer logs into the system with admin credentials.
2. Can view:
   • All active and completed orders.
   • Delivery statuses for ongoing shipments.
3. Can schedule pickups for pending parcels.
4. Access previous booking records for analytics and decision-making.

---

Let me know if you'd like further elaboration or additional sections!