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).
Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI
Supported by the Atlas install prompt. Skill-specific requirements vary.
Skill stats
Skills1CategoryGeneralStars0
About this skill
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).
Quick start
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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).
About this listing
Category
General
Reported license
Not specified
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLI