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The U-Schema metamodel

U-Schema is a unified logical model that integrates the concepts and rules of both the relational model and the four most common NoSQL data models: columnar, document, graph, and key–value.


The repository contains the following projects:

  • es.um.uschema: The metamodel definition in an ecore file, and the generated java classes for this metamodel.
  • es.um.uschema.utils: Utilities to handle U-Schema models easily, load and store models.
  • es.um.uschema.design: A Sirius Viewpoint project to provide a visual representation of U-Schema models.

List of related publications: