# Design Database > Triggered when user asks to design database schemas, plan data models, or optimize database structure. Automatically delegates to the database-designer agent. Use when this capability is needed. - Skill: `tomevault-io/design-database-2` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/design-database-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/design-database-2/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/design-database-2 --- # Design Database Skill ## Trigger Phrases This skill is automatically triggered when the user: - Asks to "design database" or "create schema" - Requests database design or data modeling - Wants to "optimize database" or "plan tables" - Mentions "schema", "ER diagram", or "data model" - Asks about database structure or relationships ## Delegation Instructions When this skill is triggered: 1. **Delegate immediately** to the `database-designer` agent 2. Provide data requirements and entities 3. Include relationships and constraints 4. Specify database type if mentioned 5. Include performance requirements ## Context to Pass - **Entities**: Data entities to model - **Relationships**: Entity relationships - **Requirements**: Functional requirements - **Performance**: Performance needs - **Database Type**: SQL, NoSQL, etc. - **Constraints**: Business rules and constraints ## Agent Responsibilities The database-designer agent will: 1. Design database schema 2. Define tables and relationships 3. Plan indexes and optimization 4. Ensure normalization 5. Create migration strategy 6. Document database design --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/dobroslavradosavljevic) — claim your Tome and manage your conversions.