.ER File Extension

Entity Relationship Diagram File

The ER file extension can have different uses. The .$ER file extension refers to Novell GroupWise databases. GroupWise is an email program. .$ER files are often between 1 MB and 5 MB in size. E-Prime ...

General Information

Title ER File Extension
Extension .er
Full Form Entity Relationship Diagram File
File Type Diagram File
Developer Varies by software
MIME Type application/octet-stream

File Function

Primary Function Store diagrams
Additional Functions Visualize structures
Features Design tool, Visual representation

File Characteristics

Quality Highly structured
Supports Layers Yes
Supports Transparency No
Editable Yes

Use Cases

Database Design Yes
System Analysis Yes
Documentation Yes

Security and Practices

Security Risks Low
Best Practices Version control, Regular backups

Historical/Version Information

Initial Release Varies by software
Latest Version Varies by software

Associated Types

Similar Extensions .erd, .dbm, .sql, .cdm

Software Compatibility

Software Usage Policy OS Compatibility
ER/Studio Commercial Windows
Dia Free Windows, Linux, Mac
Lucidchart Subscription Web-based