~~NOTOC~~ ====== Derivation ====== According to the [[:01_user_documentation:07_rgg_xl:02_xl:01_specification|XL language specification]], the XL queries are applied in parallel. In order to make sure the queries and rules are applied in parallel without concurrency access, GroIMP implementation use transactions and queues. ====== ====== {{namespace>01_user_documentation:06_graph:05_derivation}}