You can query across databases in Oracle and Sql Server, with a little work. I'm not sure about access. <BR>It really would be easier to just link the tables I would think.

Create a query from within Access that attaches to my SQL Server and retrieves the recordset. I'd likely use the same technique I applied in this thread. <BR>2.

PostgreSQL foreign data wrappers are a great way to expose APIs to SQL. And SQL is a great way to reason over the data.