Introduction Of LINQ

WHAT IS LINQ ?


A)  LINQ stands for Language Integrated Query.
B)  It was added in C# 3.0 means .net framework 3.5 and Visual Studio 2008.
C)  LINQ defines operators that helps developers to queries in a common way from
      different data sources.
D)  LINQ can queries with SQL Server databases, XML documents, ADO.NET Datasets, and
      any collection of objects that supports IEnumerable or the generic IEnumerable<T>  interface.


LINQ are basically used in the following areas :-


1) LINQ to Object {Queries performed against the in-memory data}

2) LINQ to ADO.Net
a) LINQ to SQL (formerly called DLinq)
{Queries performed against the relation database only Microsoft   SQL  Server Supported}
b) LINQ to DataSet
{Supports queries by using ADO.NET data sets and data tables}
c) LINQ to Entities
{Microsoft ORM solution}

3) LINQ to XML (formerly XLinq)
{ Queries performed against the XML source}