After some research I discovered the MyMeta API used by MyGeneration for DB meta data is now open source under the very liberal BSD license!  That sure makes my life a lot easier since it has a much more fully featured API than I started to build.  Even better it supports multiple RDMS out of the box: SqlLite, MySql, SQL Server, Access, Oracle etc.

This means that I can programmatically walk a database definition using C# in a generic way.  The API is somewhat similar to SMO, but primarily uses OLEDB to pull: DB, table, column, view, index, and sproc definitions from the different providers.

What surprised me is that the MyMeta API has interface definitions for everything; interface definitions that have the same names and properties as the interface definitions I had already created in SQLMigration.  I only had to change the namespace using statements in a few places and add a reference to MyMeta.dll to start using it with my existing code.

I haven't fully tested this out, but assuming MyMeta works as advertised, it should cut back development time significantly.