.ER1 File Extension
ERWin Entity Relationship Diagram
3.2 | 6 Votes
What is an ER1 file?
Entity relationship diagram created by ERWin, a data modeling program published by Computer Associates (CA); used for visualizing data structures and managing data complexities.
CA ERWin Data Modeler was previous known as AllFusion ERwin Data Modeler.
Programs that open ER1 files
CA ERWin Data Modeler