database implementation

SKILL.md

Domain-specific guidance for database schema design, migrations, and data modeling.

✅ Migration runs without errors on clean database ✅ Schema matches design specifications ✅ Indexes created correctly ✅ Constraints validate as expected ✅ Rollback works (if applicable) ✅ Tests pass with new schema

Issue: Adding NOT NULL column to table with existing rows

Datenbankschemadesign, Migrationen, Abfrageoptimierung mit SQL, Exposed ORM, Flyway. Verwendung für Datenbank-, Migrations-, Schema-, SQL- und Flyway-Tags. Bietet Migrationsmuster, Validierungsbefehle und Rollback-Strategien. Quelle: microck/ordinary-claude-skills.

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