Knowledge linked to evidence

Concept Library

Explore how each idea works, why it matters, where I used it, and what evidence supports it.

01What it means

02Visual model

03Where I used it

04Implementation evidence

Data systems

Trust and operation

IdempotencySafe reruns →Data trustLineage · reconciliation →Data freshnessLoad recency · period completeness →Airflow orchestrationWorkflow control →Pipeline operationsDependencies · failure isolation →

Data modelling

Structure and meaning

dbt modellingGoverned transformation →Analytics modellingGrain · star schema · marts · semantic layer →

Decision analytics

Metrics and action

Measurement designKPI definitions · guardrails →Funnel analysisDrop-off · segments · tests →

AI and statistics

Evidence before action

AI governanceModel validation · human review →Analytical rigourLook-ahead bias · sensitivity testing →