What is difference between ADO.NET and LINQ to SQL?

There are following differences between ADO.NET and Entity Framework:

ADO.NET LINQ to SQL
It is a part of .NET Framework since .NET Framework 1.0 It is a part of .NET Framework since .NET Framework 3.5
SqlConnection/OleDbConnection is used for database connectivity. We can use context for database connectivity.
Difficult to debug and cause syntax errors at run-time. Easy to debug and cause syntax errors at compile-time.
It has full type checking at run-time and no IntelliSense support in Visual Studio, since it used the T-SQL to query the database. It has full type checking at compile-time and IntelliSense support in Visual Studio, since it used the .NET Framework languages like C# and VB.
It used T-SQL to query the data to query the database and some other syntax for querying the other data source. It used LINQ to query the data which provides the uniform programming model (means common query syntax) to query the various data sources.

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