U-Schema Engineering Processes

This repository contains the Eclipse projects related to several DSLs related to U-Schema: Athena, Orion, Deimos, and SkiQL. It also contains the Eirene tool, an algorithm able to discover entity inheritance relationships in U-Schema models, and the SchemaDifferentiation utility to generate Mongoose schemas and Morphia ODMs from U-Schemas.

The engineering processes stored here depend on the U-Schema core projects that are found in the corresponding U-Schema repository.

$ git clone https://github.com/modelum/uschema
$ git clone https://github.com/modelum/uschema-engineering

In addition to this, Eirene also depends on the inference process stored in the U-Schema inference repository.

$ git clone https://github.com/modelum/uschema-inference

The repository contains the following projects:

• es.um.uschema.xtext.athena.parent: Project containing the Athena language, its corresponding editors and the Athena engine.
• es.um.uschema.xtext.skiql.parent: Project containing the SkiQL language and the web-based U-Schema visualization.
• es.um.uschema.xtext.orion.parent: Project containing the Orion language, the Orion engine and its corresponding editors.
• es.um.uschema.alloy: Project containing the validation of the Orion taxonomy using the Alloy language.
• es.um.uschema.codeql: Project containing the Orion extension, in charge of generating CodeQL queries to update code.
• es.um.uschema.subtypes: Project containing Eirene, the entity inheritance discovery algorithm.

List of related publications:

• Alberto Hernández Chillón, José Ramón Hoyos, Jesús García Molina, Diego Sevilla Ruiz, Discovering Entity Inheritance Relationships in Document Stores. Knowledge-Based Systems 230: 107394.

• Alberto Hernández Chillón, Diego Sevilla Ruiz, Jesús García Molina, Towards a Taxonomy of Schema Changes for NoSQL Databases: The Orion Language. The 40th International Conference on Conceptual Modeling, ER 2021, St. John's, NL, Canada.

• Alberto Hernández Chillón, Diego Sevilla Ruiz, Jesús García Molina, Athena: A Database-Independent Schema Definition Language. CoMoNoS 2021, under ER 2021 conference, St. John's, NL, Canada.

• Alberto Hernández Chillón, Jesús García Molina, José Ramón Hoyos, María José Ortín, Propagating Schema Changes to Code: An Approach Based on a Unified Data Model. CoMoNoS 2023, under EDBT/ICDT 2023 conference, Ioannina, Greece.

• Carlos Javier Fernández Candel, Jesús García Molina, Diego Sevilla Ruiz, SkiQL: A Unified Schema Query Language, arXiv.