Write a detailed operational runbook for a Database Migration process in a {{tone}} tone, targeting {{target_audience}}. The runbook must support the business goal of {{business_goal}} and assume an urgency level of {{urgency_level}}. Follow the Runbook Automation framework: every step must be auditable, specific enough for a new team member to execute, and include rollback actions. Include sections: Runbook Overview, RACI, Pre-Execution Checklist, Execution Steps (4 phases), Troubleshooting Guide (5+ scenarios), Emergency Procedures. Max 1500 words. Use Markdown. Every recommendation must be specific to the recruitment industry and {{target_audience}}. If a data point cannot be determined, skip that section. Paste any relevant background information after these instructions before running.