ADR 0011: Symphony describes orbit-rs with the orbit-rs wording

Status: Accepted Date: 2026-10-24 Scope: Symphony Deciders: Ravindra Boddipalli

Context

Symphony documents (DATA_DURABILITY.md, ORM_AND_DATA_LAYER.md, STATUS_AND_GAPS.md, TESTING.md) describe orbit-rs in their own words, including results measured only on Symphony’s own SQL. ADR 0001 and ADR 0008 set the position and the way to state it.

Decision

Symphony states orbit-rs’s goal and progress only in the orbit-rs wording, and states Symphony’s own results as what they are:

Goal: orbit-rs’s goal is full compatibility with PostgreSQL 18, measured against the PostgreSQL 18 conformance corpus.
Progress: the corpus pass rate with its date, as published in orbit-rs’s conformance plan.
Symphony’s own results (install plan, flow cases, recorded-SQL replay) are described as “Symphony’s SQL”, never as general PostgreSQL compatibility.

Consequences

When orbit-rs’s figure changes, Symphony documents that quote it are updated; they link to the source instead of copying more than the headline number.

Canonical wording

orbit-rs’s goal is full compatibility with PostgreSQL 18. Symphony’s install plan and flow cases pass on it; that covers the SQL Symphony sends, not general compatibility.

Verification

make adr-check rejects retired wording; review the orbit-rs figure at each orbit-rs conformance update.