Opening a DM1 File

The DM1 file type is primarily associated with ERwin/ERStudio.

DM1	File extension: DM1
	File type:	data model file

What is a DM1 file?

DM1 files mostly belong to ERwin/ERStudio. DM1 files are specialized files used in data modeling tools. They store detailed information about database structures, including the definitions of tables, columns, relationships, and constraints.
These files are created by applications such as ERwin Data Modeler and ER/Studio Data Architect to capture both logical and physical views of a database.
When you open a DM1 file, the software renders an internal diagram that contains elements such as:

Entity definitions

Attribute properties

Relationship mappings

Integrity constraints

FilExt.com tip: This internal structure is formatted in a proprietary way, meaning that general text editors cannot display it properly. For more detailed information or help, visit the dedicated pages on ERwin or ER/Studio websites.

How can I open a DM1 file?

You need a suitable software like ERwin/ERStudio to open a DM1 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your DM1 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DM1 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online DM1 Text Viewer

Choose your .dm1 file to view

or drag and drop it here

Online File Viewer

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How to extract texts from DM1 files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from DM1 file or capture a screenshot, you can use our free Online DM1 File Viewer:

Just click the "Choose your .dm1 file to view" button on this page.
Your DM1 file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert DM1 files:

ERwin/ERStudio
See the previous paragraphs to learn more about the main application. DM1 files are often referred to as ERwin/ERStudio databases because this type of file is primarily created or used by this software.
Desktop Music (Score) by Desktop Music, LLC.
Desktop Music saves music in a manageable text format. This makes cutting, copying and pasting notes as easy as editing a text. This file format is classified as Text.

Technical Data for DM1 File Extension

File classification:

Database

Related files:

dm, dmf, erd, dmd, cdm, dm_1, dm, erwin, dbc, zip, dtg, mscz, sib

a dm1 data model file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with DM1 files

Associate the DM1 file extension with the correct application.
Update your software that should actually open data model files. Because only the current version supports the latest DM1 file format. Search, therefore, e.g. on the manufacturer website after an available ERwin/ERStudio update.
To make sure that your DM1 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .DM1 file online - secure, fast, and no downloads needed.