PostGraph Graph theory algorithms for PostgreSQL
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PostgreSQL graph theory algorithms Boost Graph Library PostgreSQL database graph theory

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Graph theory algorithms for PostgreSQL The PostGraph project provides a bridge between PostgeSQL and the Boost Graph Library.Developer commentsWe aim to support a number of graph theory options useful in spatial connectivity analysis. The current version implements custom graph classes that wrap SQL edge tables. These classes are compatible with the graph concepts defined in the BGL and can be reused with many algorithms. The graph classes contain no data, only prepared query plans that are executed on-demand when algorithms request access to vertex and edge lists permitting analysis of extremely large graphs. Requirements: · PostgreSQL What's New in This Release: · I've rewritten postgraph from scratch. · A number of custom graph classes have been define. · Incidence and adjacency queries are now computes on the fly from stored query plans. · The code should scale insanely well for algorithms that do not operate on the entire edge list (which currently is returned all as once -- this will change later).

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