# Package org.eclipse.viatra.query.runtime.matchers.scopes

- Interface Summary
  Interface | Description
  --- | ---
  IStorageBackend | An abstract storage backend that instantiates tables and coordinates transactions.

- Class Summary
  Class | Description
  --- | ---
  SimpleLocalStorageBackend | Basic storage backend implementation based on local collections.
  SimpleRuntimeContext | A simple demo implementation of the IQRC interface using tables.
  TabularRuntimeContext | An abstract runtime context that serves enumerable input key instances from tables.