.EDMX File Extension

Developer by: Microsoft
Category: Developer Files

What is an .EDMX file?

.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

Windows

Microsoft Visual Studio 2017

How to Open .EDMX file on different platforms

Open .EDMX File on Windows

Right-click a .EDMX

Left-click "Open With" > "Choose another app"

Select the program that opens .EDMX file and Select check box "Always use this app to open .EDMX files" Press "Ok"

Open .EDMX File on Mac

Right-click (or Ctrl + Left-click) the .EDMX file

Click "Open With" > "Other.."

Then choose another program from the app list and press "Open"

Select check box "Turn on" for "Always open in app"

Open .EDMX File on Linux

Right click on the .EDMX file, choose "Open with" and select a program from the list above

Open .EDMX File on iPhone

Select a file. If you don't see an application to open the .EDMX file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .EDMX File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .EDMX files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .EDMX files

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

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.)