I apologize for the rendering issues. Let me provide a simpler version of the Composite Structure Diagram that should render correctly:

If the diagram still doesn't render, let me provide a text-based representation of the Composite Structure Diagram:

Composite Structure Diagram (Text Format)

Main Structure: PayrollSystem

• Contains internal components:

  1. Authentication

     • Responsible for user login and verification
     • Manages user credentials
     • Methods: login(), save_users(), load_users()

  2. EmployeeManagement

     • Manages employee hierarchy
     • Contains Person abstract class and subclasses
     • Methods: create_employee()

  3. PayrollCalculation

     • Handles payment calculations
     • Applies role-specific bonuses
     • Applies standard deductions
     • Methods: calculate_payment(), apply_deductions()

  4. Reporting

     • Generates reports from payroll data
     • Methods: generate_xml_report()

  5. DataPersistence

     • Manages data storage and retrieval
     • Handles file I/O operations
     • Methods: save_record(), load_record()

Component Relationships

• Authentication uses DataPersistence to store/retrieve user data
• EmployeeManagement uses Authentication for user roles
• PayrollCalculation uses EmployeeManagement to get employee data
• PayrollCalculation uses DataPersistence to store payment records
• Reporting uses DataPersistence to read payment records

This composite structure diagram shows how the payroll system is composed of smaller, interconnected components that work together to provide the system's functionality. Each component has specific responsibilities and collaborates with other components through well-defined interfaces.

Let me also provide a simpler Package Diagram that should render correctly:

And a simpler Deployment Diagram:

These simplified diagrams should help visualize the structure of the payroll system from different perspectives.

The arrows in my diagrams don't follow proper UML notation. Let me correct the Package Diagram with proper UML notation:

For the Composite Structure Diagram, let me use proper UML notation:

For the Deployment Diagram, let me use proper UML notation:

In UML notation:

• --|> represents inheritance/generalization
• ..> represents dependency (one element depends on another)
• *-- represents composition (strong ownership, part cannot exist without the whole)
• o-- represents aggregation (weak ownership, part can exist independently)
• -- represents association (relationship between classes)

These corrected diagrams now use proper UML notation for the relationships between elements, making them more accurate representations of the system structure according to UML standards.