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Secondly, the graph model enables efficient execution of expensive queries or data analytic functions that need to observe multi-hop relationships among data entities, such as reachability queries, shortest or cheapest path queries, or centrality analysis. There are two graph models in current use: the Resource Description Framework (RDF) model and the Property Graph model. The RDF model has been standardized by W3C in a number of specifications. The Property Graph model, on the other hand, has a multitude of implementations in graph databases, graph algorithms, and graph processing facilities. However, a common, standardized query language for property graphs (like SQL for relational database systems) is missing. GQL is proposed to fill this void."<ref name="39075 GQL NWIP">{{cite web|url=https://isotc.iso.org/livelink/livelink?func=ll&objId=20911483&objAction=Open&viewType=1|title=SC32 WG3 N282 "SC32 N3002 Draft NWIP Form4 Information Technology – Database Languages - GQL"|publisher=ISO|access-date=December 9, 2019}}</ref>}}
==== Official ISO standard ====
The GQL standard, ISO/IEC 39075:2024 Information technology – Database languages – GQL, was officially published by ISO in April 2024.
=== GQL project organisation ===
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