Intro
Subgraph indexes the blockchain data and stores it in postgres database for easy and quick access. The subgraph runs on a Graph Node which is a server that developers can run local or remote. The data store can be queried by GraphQL endpoints. DAOstack subgraph is based on graphprotocol, checkout TheGraph for more details. TheGraph opens their server to others and you can find daostack subgraph at Graph Explorer.
Should I work at this level?¶
If you are writing new Arc contracts which are not indexed by DAOstack subgraph or want to fetch data of existing Arc contracts in a way other than that specified in DAOstack subgraph's schema.graphql, then you should write your own subgraph schema and mappings