Microsoft® SQL Server® 2008 Internals
by Paul Randal Kalen Delaney Kimberly Tripp, and Conor Cunningham
Distributed Query
SQL Server includes a feature called Distributed Query, which accesses data on different SQL Server instances, other database source, and non-database tabular data such as Microsoft Office Excel files or comma-separated text files. Distributed Query is based on the OLE DB interfaces, and most OLE DB providers are feature-rich enough to be used by the Distributed Query feature. Because multiple sources can be referenced within a single query, it is an effective mechanism to interact with data from multiple sources without writing a lot of special-case code.
Distributed Query supports several distinct use cases. First, Distributed Query is useful to move data from one source to another. Although it is not a complete extract, transform, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access