# dlayer

## This library (and its documentation) is still a work-in-progress!

dlayer is a GraphQL-like data access layer. It lets you combine data from multiple sources into a single coherent API - and it's designed for application-internal use first and foremost, with network accessibility being an optional add-on.

dlayer differs from GraphQL in a number of important ways:

- dlayer supports recursive queries without needing schema hacks; both bounded and unbounded.
- dlayer is modular by default; a dlayer API can be composed of many independent 'modules' that can reference and extend each other when available. This allows for eg. constructing plugin systems, like in [sysquery](FIXME), as well as making it easier to loosely couple your API definition.
- dlayer does not use a separate schema; the schema is implicitly defined by what the API returns. This essentially makes it dynamically typed; however, trying to access a non-existent property of the schema is an error.