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---
name: fusion-datamodel
description: Compare data model designs and pick the best fit; use when modeling new data or refactoring schemas.
---
# Fusion Data Model
## Overview
Use an F-thread: three workers propose different data models. The queen evaluates tradeoffs.
## Inputs
- Entities, relationships, and access patterns
## Workflow
1. Verify `git` and `mprocs`.
2. Create session variables and worktrees.
3. Write `tasks.json`, worker prompts, and queen prompt.
4. Launch mprocs.
## Worktree Commands
```bash
git worktree add "{WORKTREE_ROOT}/impl-a" -b fusion/{SESSION_ID}/impl-a
git worktree add "{WORKTREE_ROOT}/impl-b" -b fusion/{SESSION_ID}/impl-b
git worktree add "{WORKTREE_ROOT}/impl-c" -b fusion/{SESSION_ID}/impl-c
```
## Worker Prompt Outline
- Worker A: normalized relational model
- Worker B: denormalized or document model
- Worker C: hybrid or event-based model
## Queen Prompt Outline
- Compare performance, migration cost, and correctness
## mprocs Launch
```bash
mprocs --config .hive/mprocs.yaml
```
## Output
- Selected model with rationale and migration notes
