Redgate Data Modeler

31 July 2014

ERD Notations in Data Modeling

An entity relationship diagram (ERD) is a diagram that defines the structure of database instances. Choosing which notation to use is typically left up to personal preference or conventions. Here, you can find some useful information about each notation:

• Part 1 – Barker’s Notation

• Part 2 – Chen Notation

• Part 3 – IDEF1X Notation

• Part 4 – Arrow Notation

• Part 5 – UML Notation

• Part 6 – Crow’s Foot Notation

Which ERD notation are you using? Which one do you consider to be more readable and convenient? Please share your preference and opinion! 😉