Enforcement Model
PreFlight — Deterministic Upstream Data Ingestion Gate
pf_v1.01 enforces before execution: no dataset reaches downstream systems without a verdict.
Execution Architecture
PreFlight applies a fixed-order deterministic enforcement sequence.
- Bounded structural evaluation path
- No adaptive branching
- No probabilistic evaluation
- No runtime learning
Execution behavior is invariant across identical inputs.
Structural Evidence Model
Verdicts derive exclusively from mechanically observable ingestion properties:
- Schema structural integrity
- Row traversal viability
- Numeric type stability
- Representation consistency
- Null density behavior
- Record continuity
- Encoding determinism
Only structural evidence contributes to verdict formation. No semantic inference is performed.
Verdict Reduction Model
Independent structural outcomes reduce mechanically to one of four verdicts:
- PASS
- WARN
- FAIL
- ANALYSIS_INCOMPLETE
- No weighting
- No heuristics
- No interpretive aggregation
- No probabilistic logic
Verdict reflects structural determinism only.
Enforcement States
FAIL — Deterministic ingestion violation established.
WARN — Structural exposure detected without provable corruption.
ANALYSIS_INCOMPLETE — Structural evidence insufficient to establish ingestion safety.
PreFlight issues verdicts only. Ingestion decisions remain external.
Scope exclusions: Compliance.