Dassault Systemes

Alban Roullier

Eric Vallet Glenisson

Jean-Philippe Sahut D'Izarn

Frédéric Labbate

A computer-implemented method for querying by a query engine on a database including relational data and graph data, the method including receiving a query by the query engine, the query being in a language compatible with a first order logic paradigm. The method further includes generating an intermediate representation, the IR being compatible with a first order logic paradigm. The method further includes using the intermediate representation of the query for executing the query on the relational data and the graph data of the database.

Unified query engine for graph and relational data

A computer implemented method for creating a tree of database states including accessing a database having at least one branch of database states, receiving at the database one or more write events that are applied to an identified state of the database, recovering the identified database state from the database, creating a new branch by creating a new patch as alternative state to the identified database state with a reference to the identified state.

Growing community of inventors

Vélizy-Villacoublay, France

Alban Roullier