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🚀 SafeBank Data Flow Description

This data flow diagram follows the standard rules of a Data Flow Diagram (DFD):

• 🟦 Squares represent external entities (e.g., Users, Admins).
• 🟢 Circles represent processes or actions performed within the system.
• 📄 Parallel lines represent data stores (e.g., User Data, Accounts Data, Transactions Data).
• 🔄 Arrows indicate the flow of data between entities, processes, and data stores.

The diagram demonstrates how data moves through the system while maintaining clarity and simplicity.

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1. Users’ Interactions

👤 1.1 User Registration

• Process: Users initiate the registration process.
• Validation: Submitted data undergoes a validation process to ensure accuracy and completeness.
• Outcome: Successful validation results in account creation, storing user data, and updating accounts data to link new accounts to users.

🔐 1.2 User Login

• Process: Users input their credentials to log in.
• Validation: Credentials are validated against the stored user data.
• Outcome: Successful login grants users access to their accounts and the ability to initiate transactions.

🗂️ 1.3 View Accounts

• Process: Logged-in users can view their account details.
• Data Source: Account data retrieved from the system database.

💸 1.4 Transactions

• Process: Users can initiate transactions from their accounts.
• Transaction Validation:
  • Ensures the transaction complies with the system rules (e.g., sufficient funds).
  • Valid transactions are processed and stored in the transactions database.

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2. Admin’s Interactions

🔐 2.1 Admin Login

• Process: Admins log in using hashed credentials.
• Validation: The system verifies admin credentials against stored admin data.
• Outcome: Successful login enables access to administrative functionalities.

📂 2.2 Administrative Functions

Admin tasks include:

• List Users: Retrieve and display user details.
• User Deletion: Remove a user from the system and update user data.
• User Edit: Update user details in the user database.
• User Creation: Manually create a new user account and update user data.

🔒 Data Handling:

• Admin actions are validated and logged for security.
• Changes affect the respective user data and accounts data stored in the system.

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⚙️ 3. System Processes

🛡️ 3.1 Validation Processes

• Ensures data integrity and compliance for both users and admin actions.
• Prevents unauthorized or invalid operations.

📚 3.2 Data Handling

• User Data: Stores user credentials and account information.
• Accounts Data: Holds details of all user accounts, updated during registration and transactions.
• Transactions Data: Maintains records of completed transactions.

📊 3.3 Monitoring and Feedback

• Logs and monitors system operations, including validation results and transaction processing.

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4. System Flow Summary

1. 🧑‍💻 Users and admins interact with the system through login and specific operations.
2. 🔍 Data validation ensures the accuracy and integrity of every process.
3. 📂 Key data (e.g., user accounts and transactions) is securely stored and updated based on system actions.
4. 🛡️ Admin functions provide control over user and account management.

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🎨 Key Features

• 🟢 Clear visuals of the data flow.
• 🔵 Interactive elements ensure smooth user and admin experiences.
• 🟡 Secure and reliable backend processes.
• 🔴 Efficient monitoring for system optimization.

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