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migration-guide

Sterne26

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Aktualisiert20. April 2026 um 16:31

Guide for DB schema changes and Entity modifications — impact analysis, correct change order (Entity → DTO → Repository → Service → Tests), JPA DDL strategy, and 2-phase column deletion.

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themoment-team

themoment-team/datagsm-server

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SKILL.md

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name	migration-guide
description	Guide for DB schema changes and Entity modifications — impact analysis, correct change order (Entity → DTO → Repository → Service → Tests), JPA DDL strategy, and 2-phase column deletion.

DB Migration Guide

Entity Change Checklist

Analyzed impact on existing data
Determined need for migration script
Prepared test data
Planned rollback strategy

Change Order

Modify Entity: locate domain directory with find . -type d -name "domain" -path "*/main/*" ! -path "*/build/*"
Modify DTO: ReqDto, ResDto
Modify Repository: Adjust QueryDSL queries if needed
Modify Service: Update business logic
Update Tests: Entity, Service tests

Important Notes

Use JPA DDL auto as validate or none
Production environment: Manual migration scripts
Column deletion: 2-phase deployment (Phase 1: Deprecate, Phase 2: Delete)

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name	migration-guide
description	Guide for DB schema changes and Entity modifications — impact analysis, correct change order (Entity → DTO → Repository → Service → Tests), JPA DDL strategy, and 2-phase column deletion.

DB Migration Guide

Entity Change Checklist

Analyzed impact on existing data
Determined need for migration script
Prepared test data
Planned rollback strategy

Change Order

Modify Entity: locate domain directory with find . -type d -name "domain" -path "*/main/*" ! -path "*/build/*"
Modify DTO: ReqDto, ResDto
Modify Repository: Adjust QueryDSL queries if needed
Modify Service: Update business logic
Update Tests: Entity, Service tests

Important Notes

Use JPA DDL auto as validate or none
Production environment: Manual migration scripts
Column deletion: 2-phase deployment (Phase 1: Deprecate, Phase 2: Delete)