Declarative schemas provide a centralized, version-controlled way to manage complex database schemas, simplifying the process of managing and maintaining them. By defining the desired state in SQL files, declarative schemas offer numerous benefits over traditional migrations, including a single pane of glass, versioned migrations, concise code reviews, and improved development velocity. While declarative schemas are not meant to replace migrations entirely, they can significantly simplify the database schema management process for complex databases, making it easier to manage changes and reduce errors. With declarative schemas, developers can focus on writing code rather than managing migration scripts, leading to faster development velocities and reduced friction in collaborative environments.