Scope

The canonical phase-by-phase boundary is maintained at the repository root: read SCOPE.md.

The implemented phases progress from the query engine, through persistent storage and cost-based optimization, to transactions/recovery and finally VACUUM/HOT acceptance. Explicit non-goals include PostgreSQL wire and file compatibility, the full SQL/type/catalog surface, production multi-process coordination, replication, high availability, and operational tooling.

Read this boundary before inferring product support from a familiar PostgreSQL term.