EXPRESS is a bi-modal (graphical & textual, like [[OPM]]) data modeling language. Apparently designed specifically for *product* data. It's a core part of the [[ISO]] 10303 [[STEP standard]] for product data. It's like a slightly more niche [[UML]], but also includes a textual notation. > [!tldr] The [[STEP standard]] data modeling language It supports [[Data Types]], inheritance, and support for some level of [[Ontology Object Property Characteristics]], such as [[Domain and Range]] validation. It's used in manufacturing, engineering, and architectural industries for defining & exchanging product information. # EXPRESS-G "G" represents the *graphical* half of Express. The textual half doesn't have a distinction, I guess? Unlike [[UML]] **** # More ## Source - https://en.wikipedia.org/wiki/EXPRESS_(data_modeling_language)#EXPRESS-G - Gemini ## Related -