Microsoft Access allows you to "link" to various other databases including Microsoft Access, Microsoft Excel, IBM DB2, Oracle, and other ODBC databases. Iron Speed Designer does not currently support linked databases because they are not visible to the OLEDB schema query functions used by Iron Speed Designer to extract table schema information from Microsoft Access databases.
Microsoft Access 2000 Versions
Microsoft Access Database Field Support
Query Support in Microsoft Access
Linked Databases in Microsoft Access
Relative and Absolute Path Names for Microsoft Access Databases
Accessing Microsoft SQL Server Tables through Microsoft Access Queries