<!DOCTYPE html> Software Design Documentation

Software Design Documentation

Product Name Project Review Scheduler
Date Updated May 6, 2025
Written By C. McGinnis

Introduction

The purpose of this document is to provide a comprehensive overview of the software design for the Project Review Scheduler application. This includes the system overview, design considerations, specifications, detailed design, implementation plan, testing plan, and maintenance plan.

System Overview

2.1 System Description

The Project Review Scheduler is an automated system designed to replace the current manual Excel-based process for managing project reviews. It systematically tracks projects requiring review, calculates due dates based on configured frequencies, assigns reviewers based on workload balance, sends notifications, and generates reports. The system uses a lightweight architecture with CSV files for data storage and Python for processing, making it easily deployable with minimal infrastructure requirements.

2.2 System Context

The Project Review Scheduler operates within the organization's project management environment, interfacing with multiple stakeholders:

The system automates previously manual tasks including due date calculation, reviewer assignment, notification, and reporting, eliminating the 15% oversight rate and 22% error rate identified in the current process.

2.3 System Architecture

The system follows a modular architecture with five primary components:

  1. Data Storage Layer: Three interconnected CSV files (Projects.csv, Users.csv, Reviews.csv) maintain all system data
  2. Processing Engine: Python-based components that implement the core business logic
  3. Calculation Module: Determines which projects need review and when
  4. Assignment Module: Distributes reviews fairly among available reviewers
  5. Communication Module: Sends notifications to relevant stakeholders
  6. Reporting Module: Generates visualizations and reports for management

The architecture prioritizes simplicity and maintainability while providing all required functionality. Components are loosely coupled, allowing for independent testing and future enhancements. The command-line interface provides a straightforward mechanism for administrative staff to trigger key system functions without requiring technical expertise.

This design delivers a complete solution to the project review challenges while balancing technical constraints and business requirements. The system can be deployed quickly with minimal infrastructure while providing immediate efficiency improvements.

Design Considerations

3.1 Design Assumptions

The Project Review Scheduler design is based on the following assumptions:

3.2 Design Constraints

Several constraints shaped the design decisions for this system:

3.3 Design Trade-offs

Key trade-offs were made to balance functionality, simplicity, and timeline constraints:

File-based vs. Database Storage
Decision: CSV files were chosen for data storage

Command-line vs. Web Interface
Decision: Command-line interface selected for user interaction

Local vs. Cloud Deployment
Decision: Local network execution chosen for the initial version

Manual vs. Automated Testing
Decision: Manual testing with some automated unit tests

These design considerations prioritize practical implementation within constraints while providing all required functionality. The system is designed to be extendable, allowing future enhancements to address the limitations of initial trade-offs.

Design Specifications

Requirement Description
R1 The system shall automatically calculate review due dates based on the project start date and configured frequency.
R2 The system shall categorize projects as "Overdue," "Due Soon," or "Up to Date" based on calculated review dates.
R3 The system shall implement an algorithm to fairly distribute reviews among qualified reviewers based on the current workload.
R4 The system shall avoid assigning reviewers to projects from their department when possible.
R5 The system shall automatically send email notifications to assigned reviewers about upcoming reviews.
R6 The system shall send reminder notifications as due dates approach without completion.
R7 The system shall use three interconnected CSV files (Projects.csv, Users.csv, Reviews.csv) for data storage.
R8 The system shall maintain referential integrity between the three CSV files.
R9 The system shall generate monthly review schedules showing all upcoming reviews.
R10 The system shall generate workload distribution reports showing reviewer assignments.
R11 The system shall generate overdue review alerts for management attention.
R12 The system shall validate all data inputs and maintain data integrity across CSV files.
R13 The system shall check for the CSV file's existence and create it if it is missing.
R14 The system shall handle exceptions gracefully and continue operation when possible.
R15 The system shall provide a command-line interface with four primary operations.
R16 The system shall include comprehensive documentation for administrative users.
R17 The system shall include technical specifications for maintainers.
R18 The system shall export reports to CSV format for sharing.
R19 The system shall maintain backup copies of CSV files before operations.
R20 The system shall be implementable within a 7-week development timeline.

These requirements directly address the inefficiencies identified in the current manual process while conforming to the design constraints and considerations previously outlined.

Detailed Design

5.1 Architecture Design

The system follows a modular architecture with clear separation of concerns:

All components communicate through well-defined interfaces, enabling independent development and testing while ensuring system cohesion.

5.2 Data Structure Design

The data model consists of three primary entities with the following attributes:

Projects:

Users:

Reviews:

5.3 Component Specifications

Each system component has been designed with specific inputs, outputs, and processing logic:

Due Date Calculator:

Reviewer Assignment Algorithm:

Email Notification System:

Reporting Component:

5.4 Interface Implementation

The command-line interface provides four primary operations corresponding to the core functions:

calculate_reviews   - Identifies projects requiring review based on dates
assign_reviewers    - Distributes reviews to available reviewers
send_notifications  - Sends email alerts to assigned reviewers
generate_reports    - Creates monthly schedule and workload reports

Each command accepts relevant parameters and provides feedback through console output, making the system accessible to administrative staff without technical expertise.

The development documentation maintains additional detailed specifications for each component, including algorithmic implementations, validation rules, error handling mechanisms, and unit test specifications.

Implementation Plan

6.1 Implementation Strategy

The Project Review Scheduler will be implemented using an incremental development approach, with each component built and tested separately before integration. This strategy allows for early detection of issues and provides flexibility to adjust implementation details based on feedback.

6.2 Implementation Schedule

Phase Timeframe Key Activities Deliverables
Phase 1: Setup & Requirements (Week 1) May 7-13, 2025 - Configure development environment
- Finalize requirements
- Create project structure
- Configured Python environment
- Final requirements document
- GitHub repository structure
Phase 2: Data Layer (Week 2) May 14-20, 2025 - Define CSV schemas
- Implement data validation
- Create sample data
- CSV schema documentation
- Data validation module
- Test data sets
Phase 3: Core Components (Weeks 3-4) May 21-June 3, 2025 - Implement due date calculator
- Develop reviewer assignment algorithm
- Build notification system
- Create reporting module
- Functional core components
- Unit tests for each component
- Component documentation
Phase 4: Integration (Week 5) June 4-10, 2025 - Integrate all components
- Implement command-line interface
- Conduct integration testing
- Integrated system
- CLI documentation
- Integration test results
Phase 5: Testing & Refinement (Week 6) June 11-17, 2025 - Conduct full system testing
- Refine based on test results
- Prepare user documentation
- Test reports
- Refined system
- User guide draft
Phase 6: Deployment (Week 7) June 18-24, 2025 - Finalize documentation
- Train administrative staff
- Deploy to production environment
- Final documentation package
- Trained users
- Production-ready system

6.3 Resource Allocation

Resource Allocation Responsibilities
Python Developer 100% (Weeks 1-7) Overall system implementation
Technical Writer 25% (Weeks 5-7) Documentation creation and review
Administrative Staff 10% (Weeks 1, 6-7) Requirements input and user testing
Project Manager 20% (All weeks) Schedule management and stakeholder communication

6.4 Development Environment

6.5 Risk Management

Risk Probability Impact Mitigation Strategy
Schedule delays Medium High Buffer time built into each phase; weekly progress reviews
Data integration issues Medium Medium Early validation with real data samples, incremental testing
User adoption resistance Low High Early stakeholder involvement, comprehensive training
Technical limitations Low Medium Proof-of-concept testing for critical components in Week 1
Resource availability Low High Advance scheduling, clear prioritization of tasks

6.6 Quality Assurance

This implementation plan provides a structured approach to developing the Project Review Scheduler while managing risks and ensuring quality. The incremental approach allows for adjustments as development progresses, maximizing the likelihood of successful completion within the 7-week timeline.

Testing Plan

7.1 Testing Approach Overview

The Project Review Scheduler testing plan incorporates multiple testing methodologies to ensure the system meets all requirements and functions correctly in the intended environment. The testing process will be conducted in phases, moving from component-level to system-level verification.

7.2 Unit Testing

Component Test Cases Success Criteria
Due Date Calculator - Calculate dates with various frequencies
- Categorize projects (Overdue, Due Soon, Up to Date)
- Handle edge cases (missing dates, zero frequency)
- Correct next review date calculation
- Accurate status categorization
- Proper error handling
- 100% function coverage
Reviewer Assignment - Balance workload across reviewers
- Avoid department conflicts
- Handle limited reviewer availability
- Process large assignment batches
- Fair distribution of reviews
- Department conflict avoidance
- Graceful handling of edge cases
- Performance within acceptable limits
Email Notification - Format emails correctly
- Handle various recipient scenarios
- Process multiple notifications
- Manage missing contact information
- Correct email formatting
- Proper recipient handling
- Successful batch processing
- Appropriate error messages
Reporting Module - Generate monthly schedules
- Create workload distribution reports
- Produce overdue review alerts
- Format CSV exports
- Accurate report generation
- Correct data representation
- Valid CSV file creation
- Appropriate sorting and filtering

7.3 Integration Testing

Integration Point Test Scenarios Validation Method
Calculator → Assignment - Projects identified as needing review are correctly passed to the assignment module
- Status updates are reflected in project data
- End-to-end workflow validation
- Data consistency verification
Assignment → Notification - Newly assigned reviews trigger notifications
- Reviewer information is correctly included
- Email content verification
- Notification timing checks
All Components → CSV Files - Data consistency across operations
- File locking during updates
- Recovery from interrupted operations
- File integrity checks
- Concurrent operation testing
Command Line → Components - Commands correctly trigger appropriate functions
- Parameters are properly parsed
- Output is correctly formatted
- CLI command execution testing
- Parameter validation

7.4 User Acceptance Testing

User Role Test Activities Acceptance Criteria
Administrative Staff - Run due date calculations
- Generate review assignments
- Send notifications
- Create reports
- Intuitive command usage
- Expected results produced
- Clear error messages
- Acceptable performance
Team Lead - Review workload distribution
- Verify assignment fairness
- Validate department conflict handling
- Balanced reviewer workload
- Appropriate assignments
- Clear workload visualization
Project Manager - Receive and review notifications
- Verify project information
- Check scheduling accuracy
- Timely notification receipt
- Complete project information
- Accurate scheduling
Director - Review monthly schedules
- Analyze workload reports
- Track completion statistics
- Comprehensive reporting
- Clear visualization
- Actionable insights

7.5 Performance Testing

Performance Aspect Test Scenario Performance Targets
Scalability - Process 1,000+ projects
- Handle 100+ simultaneous reviews
- Manage 50+ reviewers
- Processing time under 60 seconds
- No degradation in accuracy
- Memory usage within limits
Responsiveness - Command execution time
- Report generation speed
- Email notification throughput
- Commands complete in < 5 seconds
- Reports are generated in < 30 seconds
- Notifications sent at 10+ per minute
Resource Utilization - CPU usage during operations
- Memory consumption
- Disk I/O during CSV operations
- CPU usage < 50% of available
- Memory < 500MB
- Disk I/O optimized for minimal contention
Concurrent Operation - Multiple commands executed simultaneously
- CSV file access during updates
- No data corruption
- Appropriate locking mechanisms
- Graceful handling of concurrency

7.6 Test Environment

7.7 Test Schedule

Testing Phase Timeframe Responsible
Unit Testing Weeks 3-4 Development Team
Integration Testing Week 5 Development Team
User Acceptance Testing Week 6 Administrative Staff, Team Leads
Performance Testing Week 6 Development Team
Final System Testing Week 7 All Stakeholders

This testing plan ensures the Project Review Scheduler will be thoroughly validated before deployment, minimizing the risk of issues during production use while confirming that all requirements are met.

Maintenance Plan

8.1 Regular Maintenance Activities

Activity Frequency Responsible Party Description
CSV Backup Weekly System Administrator Automated backup of all CSV files to ensure data recovery capability
Code Review Monthly Development Team Review of system code for optimization opportunities and technical debt
Performance Analysis Quarterly Development Team Analysis of system performance metrics to identify bottlenecks
Security Review Quarterly Security Team Verification of file permissions and data protection measures
Documentation Update As needed Technical Writer Maintaining current user guides and technical specifications

8.2 Bug Fix Process

  1. Issue Reporting
    • Users report issues through the designated GitHub issue tracker
    • Each issue receives a unique identifier and priority classification
  2. Triage Process
    • Issues are reviewed within 48 hours of submission
    • Classification as Critical, High, Medium, or Low priority
    • Assignment to appropriate technical resource
  3. Resolution Timeline
    • Critical: Fix within 24 hours
    • High: Fix within 1 week
    • Medium: Fix within 2 weeks
    • Low: Address in next planned release
  4. Deployment Approach
    • Critical fixes: Immediate hotfix deployment
    • Non-critical fixes: Bundled in scheduled releases
    • All fixes undergo regression testing before deployment

8.3 Enhancement Management

Phase Timeframe Enhancement Focus
Phase 1 Enhancement Months 1-3 User experience improvements based on initial feedback
Phase 2 Enhancement Months 4-6 Web-based interface development for improved accessibility
Phase 3 Enhancement Months 7-9 Database integration for concurrent access capability
Phase 4 Enhancement Months 10-12 Integration with project management systems

8.4 Support Structure

Support Level Response Time Available Hours Contact Method
Tier 1 Support 4 business hours 8am-5pm, Mon-Fri Email, GitHub issue
Tier 2 Support 1 business day 8am-5pm, Mon-Fri Email escalation
Emergency Support 2 hours 24/7 for critical issues Emergency contact

8.5 System Availability

8.6 Version Control

8.7 Knowledge Transfer

8.8 Continuous Improvement

This maintenance plan ensures the Project Review Scheduler remains reliable, secure, and aligned with user needs throughout its lifecycle. Regular monitoring and proactive maintenance activities minimize disruptions while the enhancement roadmap provides a clear path for system evolution.

Conclusion

This software design documentation overviews the Project Review Scheduler application design. It includes the system overview, design considerations, specifications, detailed design, implementation plan, testing plan, and maintenance plan.

The Project Review Scheduler has been designed to address the inefficiencies identified in the manual review process, including the 15% oversight rate and workload imbalances. The system will improve the organization's project review operations through automated date calculation, balanced reviewer assignment, structured notification, and comprehensive reporting.

The design balances practical constraints with functional requirements, delivering a solution that is technically feasible within the 7-week timeline and operationally effective. The CSV-based data storage and command-line interface provide simplicity and minimal infrastructure requirements while delivering all required functionality.

Implementation will follow an incremental approach with well-defined phases, allowing continuous testing and refinement. The testing strategy ensures all components function correctly individually and together, while the maintenance plan provides a roadmap for ongoing support and enhancement.

This document is the definitive reference for the development and future maintenance of the Project Review Scheduler. It establishes clear specifications, processes, and expectations for all aspects of the system, ensuring alignment among stakeholders and technical personnel throughout the project lifecycle.

Any revisions to this document will be recorded in the document control section and managed through version control to maintain a complete history of design decisions and changes.

Signatures:

Project Manager: ___________________________________________
Lead Developer: ____________________________________________

Revisions:

Version Date Author Description
1.0 04/30/2025 Cynthia McGinnis Initial version
1.1 05/1/2025 Cynthia McGinnis Updated implementation plan
1.2 05/7/2025 Cynthia McGinnis Updated maintenance plan