SQL Azure

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Microsoft Azure SQL Database (formerly SQL Azure, SQL Server Data Services, SQL Services, Windows Azure SQL Database) is a cloud-based service from Microsoft offering data-storage capabilities (similar to Amazon Relational Database Service) as a part of the Azure Services Platform. Unlike similar cloud-based databases, SQL Database allows users to make relational queries against stored data, which can either be structured or semi-structured, or even unstructured documents.[1] SQL Database features querying data, search, data analysis and data synchronization.[1]

SQL Database uses a special version of Microsoft SQL Server as its backend. It provides high availability by storing multiple copies of databases, elastic scale and rapid provisioning. It exposes a subset of the full SQL Server functionality, including only a subset of the data types — including string, numeric, date and boolean.[2] It uses an XML-based format for data transfer.[1] Like Microsoft SQL Server, SQL Database uses T-SQL as the query language and Tabular Data Stream (TDS) as the protocol to access the service over the Internet.[1][3] (The product does not provide a REST-based API to access the service over HTTP[1] - Microsoft recommends using ADO.NET Data Services for this purpose.[1])


  1. ^ a b c d e f "Microsoft SQL Services FAQ". Microsoft. Retrieved 2009-04-16. 
  2. ^ Ryan McMinn. "SQL Server Data Services". MSDN Blogs. Retrieved 2008-03-07. 
  3. ^ "SQL Server Data Services". Microsoft. Retrieved 2009-04-16. 


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