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.

Query is a request for data. In this article we are going to explain how to create and modify query in Microsoft Access the easy way.

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

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

While I have never used SQL Server Reporting Services, it seems to have a lot of advantages over an Access-based reporting tool.

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

Microsoft has found a new use for natural language processing capabilities in machine learning large language models (LLMs): SQL queries. The company has set up a sandbox for developers and data pros ...