Skills Guide

Database Schema Design & Migrations

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Design and manage relational database schemas including table creation, migrations, and schema design. Helps create consistent table structures with proper keys and constraints. Manages schema changes through forward and backward migrations. Suitable for database modeling and maintenance tasks.

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Sby Skills Guide Bot
DevelopmentIntermediate
6/2/2026
Claude CodeCursorWindsurfCopilotCodex
#database#schema-design#migrations#sql#relational-database

Recommended for

Backend developerClaude CodeCode reviewFrontend developerCursorCopilot

Automated summary

This skill enables designing and managing relational databases, including table creation, migrations, and schema modeling.

Strengths

  • Explicit normalization and relationship modeling
  • Safe and reversible migrations
  • Support for indexes and constraints for performance and integrity

Limitations

  • Does not cover NoSQL databases
  • May not handle advanced partitioning or sharding scenarios
  • No specific DBMS-specific recommendations
When to use it

Use this skill when designing a new relational schema, applying migrations, or reviewing an existing database structure.

When not to use it

Avoid this skill for non-relational databases or if you need advice on query optimization or advanced administration.

Security analysis

Safe
Quality score88/100

The skill provides purely instructional guidance on database design and migrations. It does not involve executing any commands, accessing external resources, or performing potentially harmful operations. No tools are declared, and the content is void of destructive or exfiltration instructions.

No concerns found

How this analysis is made

Examples

Create users table
Create a SQL table for users with columns: id (UUID primary key), email (unique, not null), password_hash (not null), and created_at (default now).
Add migration for new column
Write a migration to add a 'status' column (VARCHAR, default 'active') to the 'orders' table, with a forward and backward migration.
Design schema for e-commerce
Design a relational schema for a simple e-commerce system with products, customers, orders, and line items. Include primary keys, foreign keys, and indexes.

name: database-skill description: Design and manage relational databases including table creation, migrations, and schema design. Use for database modeling and maintenance.

Database Skill – Schema Design & Migrations

Instructions

  1. Table Creation

    • Define clear and consistent table structures
    • Use appropriate data types and constraints
    • Apply primary keys and foreign keys correctly

  2. Schema Design

    • Normalize data where appropriate
    • Model relationships explicitly
    • Design for scalability and maintainability

  3. Migrations

    • Create forward and backward migrations
    • Ensure migrations are idempotent and safe
    • Avoid destructive changes without backups

  4. Indexes & Constraints

    • Add indexes for frequently queried columns
    • Enforce uniqueness and referential integrity
    • Use constraints to protect data correctness

Best Practices

  • Use consistent naming conventions
  • Keep schemas simple and well-documented
  • Version control all migrations
  • Test migrations in non-production environments
  • Follow relational database design principles

Example Structure

CREATE TABLE users (
  id UUID PRIMARY KEY,
  email TEXT UNIQUE NOT NULL,
  password_hash TEXT NOT NULL,
  created_at TIMESTAMP DEFAULT NOW()
);

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/database-schema-design-migrations-mm5t8cfg' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/database-schema-design-migrations-mm5t8cfg/download' --output '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md.part' && mv '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md.part' '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md' && test -s '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/database-skill' && cp -R '.skill-downloads/database-schema-design-migrations-mm5t8cfg' '.claude/skills/database-skill'

Cursor
test -f '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md' && test -s '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/database-skill' && cp -R '.skill-downloads/database-schema-design-migrations-mm5t8cfg' '.cursor/skills/database-skill'

Codex
test -f '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md' && test -s '.skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/database-skill' && cp -R '.skill-downloads/database-schema-design-migrations-mm5t8cfg' '.agents/skills/database-skill'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/database-schema-design-migrations-mm5t8cfg'

openskills read 'database-schema-design-migrations-mm5t8cfg'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/database-schema-design-migrations-mm5t8cfg/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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