QuaDer : import and condense quads datasets

It stores:

• all resources or literals in a catalog.
• evolving quad datasets in a compressed form using bit vectors to represent the presence of quads across versions.

Query condensed versioned quads with QuaQue

• It supports SPARQL queries without introducing new operators, maintaining interoperability.
• QuaQue allows querying across multiple versions simultaneously using the condensed quad representation.
• The component uses the condensed representation to improve the execution of join and aggregation queries.