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.

That means they’re faster than Access queries. Transact-SQL (T-SQL) provides procedural extensions to SQL, allowing you to build more sophisticated queries.

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.

As a result, you can now create a PROC SQL view, DATA step view, or SAS/ACCESS view with DBMS data. For this example you create a view descriptor, VLIB.ALLEMP, based on SYBASE data. The outer PROC SQL ...

You don't have to give up using dynamic SQL just because you're using Entity Framework. The Entity Framework SqlQuery method will give you back the flexibility of dynamic SQL and still let you work ...

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

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.