Developer: Query style programming with Orcas

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Query style programming with Orcas

Developers can now apply standard query operators in their programs using LINQ with Visual Studio 2008 (Orcas) to directly access the data objects

Rahul Sah

Thursday, November 08, 2007

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Microsoft released Visual Studio 2008 (project Orcas) Beta 2 in July this year, which incorporates .NET Framework 3.5. This new framework adds support for new Web protocols to build WCF (Windows Communication Foundation) services and also provides support for WPF (Windows Presentation Foundation). The other noticeable feature is LINQ, which we will talk about in detail.

LINQ and its features

Direct Hit!

Applies To: .NET developers
USP: Programming in query style
Primary Link: msdn2.microsoft .com/hi-in/vstudio/aa700831.aspx
Keywords: Orcas, LINQ, LINQ to SQL

The standard query operators allow queries to be applied to IEnumerable based information source and allow developers to use query style syntaxes (LINQ expressions) for their codes referring to objects or datasets. The standard query operators are used for LINQ to Objects as well, where they can be applied to all in-memory information. The power of LINQ is in its extensibility.

LINQ can provide implementations that work over SQL data sources. LINQ to SQL translates LINQ-based queries into SQL database queries. A database-specific provider then analyses and transforms these into appropriate query language for the data store, for example, Microsoft SQL Server. Let's see how LINQ can be used over Objects in projects and also over SQL for a database reference.

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