business-data-model-designerlisted

# Business Data Model Designer <!-- anthril-output-directive --> > **Output path directive (canonical — overrides in-body references).** > All file outputs from this skill MUST be written under `.anthril/scaffolds/business-data-model-designer/`. > Run `mkdir -p .anthril/scaffolds/business-data-model-designer` before the first `Write` call. > Primary artefact: `.anthril/scaffolds/business-data-model-designer/<artefact>`. > Do NOT write to the project root or to bare filenames at cwd. > Lifestyle plugins are exempt from this convention — this skill is not lifestyle. ## Skill Metadata - **Skill ID:** business-data-model-designer - **Category:** Cross-Cutting - **Output:** ERD + SQL migrations - **Complexity:** High - **Estimated Completion:** 20”“30 minutes (interactive) --- ## Description Designs complete data models for business applications — tables, relationships, Row Level Security policies, indexes, constraints, and triggers. Outputs Supabase-compatible PostgreSQL SQL migrations ready for deployment. Takes a business domain description and application requirements as input, then produces a normalised relational schema, an entity-relationship diagram, migration SQL with proper sequencing, RLS policies for multi-tenant and role-based access, performance indexes, and seed data specifications. Designed for Next.js + Supabase applications where the database is the backbone of the product. See [reference.md](reference.md) for RLS policy patterns, index strategy, Supabase-s