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Schema Evolution

Category: General  ·  Sub-category: general-misc  ·  Last updated:
Use when reasoning about how a database schema changes over time without breaking deployed application code: the expand/contract pattern (Ambler & Sadalage), the zero-downtime change rules, the backwards-and-forwards compatibility envelope (deploy ordering and rollback discipline), the catalog of schema changes (add column, drop column, rename, type change, add constraint, add index) and the safe procedure for each, the dual-write and dual-read transitions that make non-trivial changes safe in production, and the relationship between schema evolution as a design discipline and database-migration mechanics as its tooling. Do NOT use for the mechanical execution of one migration (use database-migration), schema design from scratch (use data-modeling), query tuning (use query-optimization), or distributed-data partitioning (use sharding-strategy).

What this skill does

Schema Evolution is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/schema-evolution/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when reasoning about how a database schema changes over time without breaking deployed application code: the expand/contract pattern (Ambler & Sadalage), the zero-downtime change rules, the backwards-and-forwards compatibility envelope (deploy ordering and rollback discipline), the catalog of schema changes (add column, drop column, rename, type change, add constraint, add index) and the safe procedure for each, the dual-write and dual-read transitions that make non-trivial changes safe in production, and the relationship between schema evolution as a design discipline and database-migration mechanics as its tooling. Do NOT use for the mechanical execution of one migration (use database-migration), schema design from scratch (use data-modeling), query tuning (use query-optimization), or distributed-data partitioning (use sharding-strategy).

Who uses this skill

The Schema Evolution Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/schema-evolution
curl -L https://claudskills.com/skills/schema-evolution/SKILL.md \
  -o ~/.claude/skills/schema-evolution/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/schema-evolution/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/schema-evolution/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\schema-evolution\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

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Attribution & license

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Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all General skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel

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