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Asked: 2026-05-31T10:07:45+00:00

I was using ADO.Net in my .Net projects from the past few years. Now

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I was using ADO.Net in my .Net projects from the past few years. Now I started using Linq2Sql and Entity Framework.

When using ADO.Net application my client should have SQL Server in their system to access the database file.

But some one has told me that Linq2Sql and Entity Framework doesn’t need SQL Server on the client, it just need the .mdf file to access the database.

Because in LinqToSql we give the connection as the path of .mdf file

DataContext dc= new DataContext("path to database file");

Is it true?

Please explain me all the things.

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1 Answer

  1. Editorial Team

    It is not related with ADO.net or LINQ2SQL or EntityFramework. It is related with which Database Edition you are using. And I don’t think you can use .mdf file without Installing SQL Database Server from any of above data access technology.

    May be you are referring to SQL Compact Edition (.sdf). Which you can use without installing SQL Server. (You can also connect with ADO.net to .sdf database file)

    myConnection = new SqlCeConnection("Data Source=\\Mobile\\Northwind.sdf;");
myConnection.Open();

    [SQL Compact Edition]

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