File Extension Library

.EDMX File Extension

  • Developer by: Microsoft
  • Category: Developer Files

What are .EDMX files and how to open them?

Can't open .EDMX file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .EDMX file.

What is a .EDMX file extension?

.EDMX file extension is created by Microsoft. .EDMX has been classified as Developer Files.

.EDMX is ADO.NET Entity Data Model Designer File

Data model file created by the Entity Data Model Designer component of Microsoft Visual Studio; stores the schema for a database, including entities (e.g., database tables), their fields, and their relationships (e.g., one-to-one and one-to-many).

EDMX files are used for generating SQL Server database schemas. They contain three metadata files: 1) the conceptual schema definition language (CSDL) file, 2) the store schema definition language (SSDL) file, and 3) the mapping specification language (MSL) file.

NOTE: To create EDMX files, you need a version of Visual Studio that includes the ADO.NET Entity Data Model Designer.

List of all softwares that can open the ADO.NET Entity Data Model Designer File
Microsoft Visual Studio 2017

How to fix problems with .EDMX files

  1. You need to update the application that you normally use to open .EDMX files. Only the latest version of the software supports the current .EDMX file format
  2. You need to check the .EDMX file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)