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ViziQuer

The aim of the ViziQuer project is to provide visual/diagrammatic environment for ontology-based data query definition and execution.

See https://viziquer.lumii.lv for the tool description.

See the ViziQuer wiki for information on getting started and using ViziQuer.

Acknowledgements

The ViziQuer tool has been developed at Institute of Mathematics and Computer Science, University of Latvia, https://lumii.lv, with partial support from Latvian Science Council project lzp-2021/1-0389 "Visual Queries in Distributed Knowledge Graphs" (since 2022).

Installation

You can choose between running ViziQuer locally (from source) and running ViziQuer within a Docker environment.

To run ViziQuer in Docker

Go to the ViziQuer Tools repository and follow the instructions there.

To setup ViziQuer locally

  1. Download and install Meteor framework, follow instructions: https://www.meteor.com/install
  2. Perform git clone for this repository.
  3. Change to the ./viziquer/app directory.
  4. Execute the command meteor npm ci to install the required node packages.
  5. Now to run the ViziQuer tool, type meteor in the ViziQuer directory. To run on a specific port, type, for example, meteor --port 4000.
  6. Open the web browser and type localhost:3000 (default port: 3000) or with the specified port localhost:4000

Configuration for the first use

  • The first user that signs up to the tool instance shall get administrator rights (the rights to manage tool configurations)

Context

For the use with the data shape server (DSS), the DSS server needs to be installed/accessible, as well (put the link in .env file, following the pattern given in sample.env).

See https://github.com/LUMII-Syslab/data-shape-server

The DSS shall need a link to a PostgreSQL database, holding the data schemas for the endpoints to be queried.

The sample schemas are available; means for their creation are described at https://viziquer.lumii.lv