Relation Graph derived from Oxigraph 0.2.x is a substrate pallet that allows anyone to use GraphDB in the Substrate blockchain platform.
It provides ready-to-use GraphDB service and hides the complexities for Dapps on the Substrate platform, so Dapps builders can focus on their business logic.

• One click deploy on Substrate.
• Hide the complexities of on-chain operations with SPARQL.

It supports the following specifications:

• SPARQL 1.1 Query, SPARQL 1.1 Update, and SPARQL 1.1 Federated Query.
• Turtle, TriG, N-Triples, and N-Quads.
• SPARQL 1.1 Query Results JSON Format and SPARQL 1.1 Query Results CSV and TSV Formats.

• Relation graph can effectively reduces the development threshold of building Web3 decentralized applications which contains large data.
• It will bring a pallet of graph database to Polkadot ecosystem.

Introduct the functions and the implementation principle of Relation Graph.

Two programs which can separately execute on Linux and MacOS.

Provide unit tests to cover all basic logic.