Datascript

• DataScript

  • See Person/Nikita Prokopov/GitHub/datascript
  • DataScript is a ClojureScript implementation of Datalog, a declarative logic programming language originally derived from Prolog.
  • It is an in-memory database that runs entirely in the browser (or any JavaScript environment), making it suitable for client-side applications, offline-first apps, and reactive UIs.
  • Unlike SQL, DataScript is based on facts and rules, allowing for expressive and composable queries over relational-style data.
  • Querying in DataScript resembles logic programming: instead of specifying procedures, you describe the shape of the data you want, and the engine figures out how to get it.
  • It is often used in reactive frameworks (e.g., re-frame) to manage app state in a normalized and queryable way, akin to how GraphQL treats data access.
  • DataScript enables time-travel debugging, immutable histories, and derived data views — powerful tools in modern frontend architecture.
  • Compared to Logseq/Plugin/API, DataScript queries provide more precise and composable access to the underlying graph, making it a key tool for power users and internal tool builders.
  • Similar technologies: Datalog, SQL, GraphQL