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FAQ.md

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Frequently Asked Questions

  1. What is the data model of gStore?

    Answer: The data model of gStore is a native graph model that maintains the graph structure of the original RDF knowledge graph.

  2. What query language does gStore use?

    Answer: gStore uses the SPARQL 1.1 standard query language and converts SPARQL queries for RDF into subgraph matching queries for RDF graphs.

  3. What is the storage capacity of the stand-alone version of gStore?

    A: A single machine supports 5 billion RDF triples.

  4. What operating systems does gStroe support?

    A: gStore currently supports Linux-based kernel operating systems, such as CentOS and Ubuntu.

  5. What are the requirements for the installation environment of gStore?

    A: For the environment requirements of gStore, please refer to Developer Resources > Installation Instructions > System Requirements.

  6. What are the installation methods of gStore?

    Answer: The latest version 1.0 of gStore currently supports three installation methods:

(1) Static compiled version installation: download and unzip it to use (click [here](http://file.gstore.cn/f/9a89ea8572e64262b1af/?dl=1) to download)

(2) Source code compilation and installation: For details, please refer to Developer Resources > Installation Instructions > gStore Compilation (the required environment needs to be installed first)

(3) Docker installation: For details, please refer to Developer Resources > Installation Instructions > Deploy gStore using Docker

  7. Can gStore be operated through interfaces?

    A: gStore currently provides three interface modes: HTTP, RPC, and Socket, corresponding respectively to the three services: bin/ghttp, bin/grpc, and bin/gserver. For specific usage, please refer to Developer Resources > Quick Start > HTTP API Service and Socket API Service.

  8. How to start up the interface service of gStore?

    Answer: Starting up ghttp: bin/ghtp - p [port]

Starting up grpc: bin/grpc - p [port]

Starting up server: bin/gserver - s

For specific usage, please refer to Developer Resources > Quick Start > HTTP API Service and Socket API Service.

  9. Which path queries does gStore support?

    Answer: Path queries currently supported by gStore include: shortest path query, cycle query, K-hop reachability query, and breadth-first search count.

  10. What data file formats does gStore support for building databases?

    Answer: The file formats supported by gStore are nt, n3, ttl and rdf.