What is an ERX file?
The .ERX file extension is most commonly an Entity-Relationship diagram model file. Database administrators use these files to design database structures, map relationships, and generate SQL code. The two most common programs that create .ERX files are IDERA ER/Studio and erwin Data Modeler. Inside, the standard ER/Studio .ERX file is saved in plain XML format, which makes it easy to read with a simple text editor.
Some .ERX files belong to completely different systems. They might be CAD add-on modules for Nemetschek Allplan, compiled executable files for the Sony PlayStation 2 system, or compressed report files from Eagle PACE.
How to open ERX files?
Because the .ERX extension is shared by different programs, it is important to know the file's origin. viewer.online/erx analyzes .ERX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. Because .ERX files have multiple possible meanings, we recommend using viewer.online/erx to identify the actual format of your specific file.
If your file is an XML-based database model, you can view its text structure in Notepad++ or Visual Studio Code. To see the visual diagram, you must import the file into the original database modeling software.
Software and tools
- IDERA ER/Studio (Data modeling)
- erwin Data Modeler (Data modeling)
- Nemetschek Allplan (CAD design)
- Notepad++ (Text editing)
Summary
An .ERX file can hold database schemas, CAD plugins, or software executables. Because most .ERX files use the known XML format, viewer.online/erx can safely open and display them online, eliminating compatibility problems.