Vijay, refactoring a database schema is one thing, moving the schema to another database is another. In other words, they're two different tasks performed independently of each other, and using different tools and techniques.
We don't cover migrating between database vendors in the book.
However, I suspect that part of the migration effort as you describe it will be to fix some of the problems in your current schema. If so, this book will prove incredibly valuable to the folks doing that part of the effort.