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Posts Tagged "FILESTREAM"

Working with FILESTREAM BLOBs in BizTalk

Dan Field

MSDN provides an example of INSERTing large data into SQL Server, leveraging the WCF-SQL adapter’s built in FILESTREAM capabilities.  However, it’s also possible to leverage the transaction enlisted by the WCF adapter in a custom pipeline to pull FILESTREAM data out of SQL Server more efficiently than the more common SELECT … FOR XML query which simply grabs the FILESTREAM content and stuffs it into an XML node in the resulting document.
Imagine, for example, you had a large document of some sort (XML, Flat File, etc.) to store in SQL Server that BizTalk would need to process from a FILESTREAM table defined like so:
The tradeoff here is losing the typed XML data in favor of more efficient storage and access to larger file objects (especially when the data will, on average, be large).  This can make a vast difference if you have…

It’s a File System… It’s a Database Table… It’s SQL Server Denali FileTable!

Lenni Lobel

SQL Server 2008 introduced FILESTREAM, an innovative feature that integrates the relational database engine with the NTFS file system to provide highly efficient storage and management of BLOBs. Now FileTable, a new feature coming in the next version of SQL Server (code-named “Denali”), builds on FILESTREAM and takes database BLOB management to the next level. In this post, I’ll explain FileTable and show you how it works. I also encourage you to experiment with FileTable yourself by downloading and installing SQL Server Denali CTP3 from http://bit.ly/DenaliCTP3 (but be sure to install it on a virtual machine; beta software can be difficult or impossible to uninstall).
Note: FileTable relies on FILESTREAM, so you need to understand FILESTREAM to fully understand FileTable. If you’re new to FILESTREAM, you can get the necessary background by reading Introducing FILESTREAM, Enabling and Using FILESTREAM, and Using…

Using SqlFileStream with C# to Access SQL Server FILESTREAM Data

Lenni Lobel

FILESTREAM is a powerful feature in SQL Server that stores varbinary(max) column data (BLOBs) in the file system (where BLOBs belongs) rather than in the database’s structured file groups (where BLOBs kill performance). This feature was first introduced in SQL Server 2008, and is now being expanded with the new FileTable feature coming in SQL Server 2012 (code-named “Denali”). This post contains abbreviated updated FILESTREAM coverage that I’ll be adding to Tallan’s new book Programming SQL Server 2012 (to be published, hopefully, shortly after the first quarter of 2012).
If you’re not already familiar with FILESTREAM, you can get the necessary background by reading these two articles: Introducing FILESTREAM and Enabling and Using FILESTREAM. In this post, I’ll show you how to use the SqlFileStream class to achieve high-performance streaming of SQL Server FILESTREAM data in your .NET applications (the code…