If you have been asked? Own? Why can not I develop database and XML queries in a language I already know??,? Then the Language Integrated Query, or LINQ, is for you. Plain-English guide provides a thorough overview of LINQ, from understanding the tasks to make LINQ work with both Visual Basic and Visual Studio 2005. ? With this guide, one that is comprehensive, you'll discover how:. Use one query language with all Microsoft languages Checking NET language extensions and work with extension methods, partial methods, lambda expressions, and LINQ query expression to DataSet operators, SQL server operations, XML API, or Active Directory Deal with the database? download and install the Northwind database, generate Northwind entity classes, and create an XML file Create a partial class Northwind sample mapping, sample partial methods, and examples of modifications to the database Use the database object with LINQ query in Visual Basic and C # As an added bonus, you can visit the companion Web site for examples of LINQ in C # and Visual Basic.