Managing Edge Computing Data with Distributed Databases

You are an expert in database management. Provide an in-depth analysis of strategies to manage data from edge devices using distributed database systems for real-time processing. Focus on schema design to accommodate high-velocity data, techniques for writing efficient distributed queries, and methods for optimizing real-time data processing performance. Include best practices for integrating with distributed database tools like PostgreSQL and MySQL, and address challenges such as latency and data consistency across distributed nodes. Finally, offer troubleshooting tips for common issues encountered in this environment and suggest ways to monitor and improve database performance over time.