What is a .ER1 File And How To Open It – Computer Associates

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Have you downloaded a file with .er1 extension, but you are not sure what it is? It is important to know how to open this file – in order to be able to work with it. In this article we will explain what .er1 file extension is, how to open it and how to work with it.

What is a .ER1 file?

The file extension .ER1 comes from ERWin Entity Relationship Diagram. The developer of this file extension is Computer Associates. The file is a data related file.

What to know

There is currently 0 software that can open the .er1 file on 0 platforms.


Unfortunately, we haven’t found a software associated with this file extension yet, however we are working on it!