.ERX File Extension
Entity Relationship Data Model File
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What is an ERX file?
An ERX file contains an "Entity Relationship" data model, which is a diagram that details the relationships between components of data in a database. It is used by various database software to design the structure of a database.
Various programs may be used to create ERX files including erwin Data Modeler, Microsoft Dynamics, and Microsoft Visio. To create an ERX file with Microsoft Dynamics AX, click Tools → Reverse Engineer and select ERX ER Data Model. To create an ERX file with Visio, click File → Save As and choose the ERX format type.