Doctorant(E) query Languages for Graph Databases

il y a 2 semaines


Paris e, France CNRS Temps plein

Cette offre est disponible dans les langues suivantes:
Date Limite Candidature : lundi 14 août 2023

**Informations générales**:
**Intitulé de l'offre **:Doctorant(e) "Query languages for graph databases" (H/F)**
Référence : UMR8243-JEMSAM0-002
Nombre de Postes : 1
Lieu de travail : PARIS 13
Date de publication : lundi 24 juillet 2023
Type de contrat : CDD Doctorant/Contrat doctoral
Durée du contrat : 36 mois
Date de début de la thèse : 1 octobre 2023
Quotité de travail : Temps complet
Rémunération : 2 135,00 € brut mensuel
Section(s) CN : Mathématiques et interactions des mathématiques

**Description du sujet de thèse**:
Depuis les années 1980, le domaine de la gestion des données est fortement dominé par le modèle de base de données relationnelle. Depuis la fin des années 1980, tous les principaux systèmes de bases de données relationnelles parlent le même langage, appelé SQL. Ce paysage a changé au cours de la dernière décennie avec l'arrivée des bases de données graphiques. Celles-ci traitent les données telles qu'elles sont perçues conceptuellement, ce qui les rend facilement applicables à de nombreuses tâches pour lesquelles les bases de données SQL traditionnelles échouent. Il existe plusieurs dizaines de produits de bases de données graphiques sur le marché, provenant à la fois d'entreprises établies (Oracle, Amazon, Neo4j, IBM, SAP) et de plusieurs start-ups très en vue. Aux premiers stades de leur développement, les bases de données graphiques ne disposaient pas d'un langage unificateur capable de jouer le rôle de SQL. Cela a conduit à une proposition visant à définir une nouvelle norme internationale unificatrice pour un langage de requête graphique, et constitue actuellement un sujet de recherche très actif.
Ce doctorat contribuera à construire la base théorique de l'analyse et de la conception des langages d'interrogation de graphes. La première étape consistera à développer un nouveau cadre formel permettant d'étudier les propriétés et les limites des langages d'interrogation de graphes. Des caractéristiques telles que le coût informatique de l'évaluation des requêtes et l'expressivité du langage sont encore largement inexplorées et nécessitent un cadre formel propre pour être analysées. Ensuite, avec cette boîte à outils en main, des solutions seront explorées pour faire évoluer ces langages, et concevoir de nouvelles fonctionnalités de langage, tout en garantissant un bon compromis entre l'expressivité et le coût.

**Contexte de travail**:
le doctorant recruté travaillera à l'IRIF et sera amené à collaborer avec la communauté scientifique internationale travaillant sur les bases de données graphes, incluant les membres du LDBC et les membres du projet ANR Verigraph.

**Contraintes et risques**:
Pas de risques et contraintes


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