Term Kind Topic What it is
CQRS as a Data Architecture pattern CQRS Treating the serving layer as a derived, rebuildable projection of an authoritative write store.
Materialised Read Model Projection, Read Model practice CQRS A precomputed, query-shaped copy of data maintained asynchronously from the system of record - and the operational obligations that come with it.
Pattern Scope Discipline Apply the Pattern to a Use Case, Not the System concept CQRS The rule that heavyweight data patterns - CQRS, event sourcing, materialised read models - belong to the specific part of a domain that needs them, never to a whole product.
Projection pattern CQRS The process that consumes changes from the write side and maintains a read model, and the component where most CQRS bugs live.
Read Model Query Model, Projection Store pattern CQRS A data structure shaped for a specific query rather than for the domain, maintained separately from the write model.