The first milestone, which has working prototype code, is a user-visible function that takes a set of connection parameters to pass to DBI and a string of SQL. On success, it returns a SETOF RECORD <a href="http://www.postgresql.org/docs/current/static/xfunc-sql.html#AEN28835";>Set-Returning Functions</a>.

The second milestone, in design phase, takes a set of parameters for connecting to a remote data source. It queries the data source and creates TYPEs and accessor FUNCTIONs for each table it finds.

The third milestone, in concept phase, will handle JOINs with remote data sources.