The talk will present G-CORE and its most striking features. G-CORE is a graph query language proposal developed by Linked Data Benchmark Council (LDBC). It is a closed graph query language that includes graph pattern matching, inclusive extended regular path expressions, graph construction (graph projection and graph aggregation), and (weighted) shortest path finding. The query language queries graphs and returns a graph. Hence, it supports views and correlated sub-queries, which have proven their worth in the relational databases. To ensure that the query language is practically usable on large data, G-CORE builds on previous complexity results and carefully select useful features, but restricted in such ways that the resulting language is polynomial in data complexity. As such, G-CORE connects the practical work done in industrial proposals with the foundational research on graph databases; in fact, it can be considered as a bridge between these two worlds.
Speakers: Hannes Voigt