G06 — Product, offer, merchant, and inventory graph · Graph systems

179 words. Researched design, reviewed 2026-09-12: a library view or proposed design with its sources stated; not a deployed system, a live audit or a provider requirement. Source: Graph/G06-product-offer-merchant-and-inventory-graph.md. Graph systems, shelf 5 of 8; library release 2026.09.12-g40.

Status: NEW RESEARCHED DESIGN; not deployed
Reviewed: 2026-09-12
Nature: standards-backed library view
Priority: P3_IF_APPLICABLE
Accountability: R11, R03, R14, R16

Question

What is sold, by whom, with which current offer and availability?

Nodes

Product; Variant; Offer; Merchant; Inventory observation

Relationship sketch

offer → item
offer → seller
inventory observation → offer/version

Evidence inputs

Actual catalog, identifiers, landing pages, feeds, dated price and stock records.

Implementation

Separate an enduring product identity from a seller-specific, time-sensitive offer. Reconcile pages and feeds. Only use variant relationships supported by the actual catalog.

Acceptance checks

Offer currency and price agree with the reviewed source
Availability has an observation time
Variants are not merged solely because names resemble each other

Do not infer

Your catalog graph is not direct control of Google Shopping Graph.

Publication boundary

Approved catalog facts public; supplier and customer records private.

Source basis

S30, S31. See Research/sources.json. Sources support the primitives or named technology. The organization, labels, actions, and acceptance contracts in this catalog are this library's design, not claimed provider requirements.