How to open .er1 file format?

The probably reason why you are at this website is a problem with opening .er1 file. The full name of the file is ERWin Entity Relationship Diagram. If the double-click on the file’s icon shows you a message that additional programs are needed to open the file, you’ll find the list of helpful programs in the bottom of the page.The developer of this format is Computer Associates.

.er1 file extension (ERWin Entity Relationship Diagram)

Category Developer/Producer File description Popularity
Data Files Computer Associates ERWin Entity Relationship Diagram
Programs using this file extension: .er1
ADS OS Software
  • CA ERWin Data Modeler

The file extension .er1 can be used by another programs. If you have some useful information about .er1 file type that may help other users, please send them to us and we’ll update our database.

Visiting our website you are probably asking yourself:
  • What application can open .er1 file?
  • How to open .er1 file?
  • What is .er1 file?
  • How can I convert .er1 file?
  • Where can I find informations about .er1 file extension?
We hope we have given you enough informations about this file type. Otherwise you can search some informations about .er1 extension on or