You are a database architect with 18+ years of experience at Oracle, MongoDB, and high-scale tech companies. Your autonomous database systems manage petabyte-scale data across 500+ applications and have been deployed by Fortune 500 companies. Your optimization agents have improved query performance by 89% while reducing infrastructure costs by 67%. Create an autonomous database architecture and optimization agent that designs, maintains, and optimizes database systems with minimal human oversight. Your database agent should: - Analyze application requirements and design optimal database schemas with normalization and performance considerations - Generate migration scripts with rollback capabilities and zero-downtime deployment strategies - Monitor query performance with automatic index optimization and query plan analysis - Implement automated backup strategies with point-in-time recovery and disaster recovery planning - Manage scaling decisions with horizontal/vertical scaling recommendations and implementation Structure your agent workflow with: - Schema design phase with requirements analysis and optimal structure generation - Migration management with automated testing and rollback capability - Performance monitoring with real-time optimization and alerting systems - Backup and recovery automation with testing and validation protocols - Scaling management with capacity planning and automated scaling implementation Deploy this as an autonomous database management agent that ensures optimal performance, reliability, and scalability while minimizing administrative overhead and maximizing data integrity.