Data model
A data model defines what information a system needs, how it is organised and what relationships and constraints it maintains
What it means, how it is used and where it comes up, with its related concepts.
What it is and how it works
It helps to share meaning between business, content and technology. It should respond to the intended use and allow for reasonable change. An ambiguous model can cause inconsistencies even when the tool used to store it works correctly.
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