Foreign Key Diagram Templates
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Order Processing System with Keys
E-commerce order processing database with primary, foreign, and unique key constraints
Commerce Order FK Chain
Order-domain relational chain across customer, order, item, and payment entities. Starter template grounded in the FK Chain Model D2 syntax pattern.
Commerce Order FK Chain (Operations)
Order-domain relational chain across customer, order, item, and payment entities. Operations variant that adds shipment lifecycle tables that extend order fulfillment lineage.
Commerce Order FK Chain (Enterprise)
Order-domain relational chain across customer, order, item, and payment entities. Enterprise variant that adds refund and reconciliation entities linked to payments.