a5c-ai/schema-comparator
library/specializations/code-migration-modernization/skills/schema-comparator/SKILL.md
Compare database schemas between source and target environments for migration planning
$ install --global
skillsauthnpx skillsauth add a5c-ai/babysitter schema-comparatorInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- schema-comparator
- description:
- Compare database schemas between source and target environments for migration planning
- allowed-tools:
- ["Bash", "Read", "Write", "Grep", "Glob", "Edit"]
Schema Comparator Skill
Compares database schemas between source and target environments to identify differences and generate migration scripts.
Purpose
Enable database migration planning for:
- Schema diff generation
- Data type mapping
- Constraint comparison
- Index analysis
- Migration script generation
Capabilities
1. Schema Diff Generation
- Compare table structures
- Identify column differences
- Detect missing objects
- Generate change reports
2. Data Type Mapping
- Map types across databases
- Handle type conversions
- Identify precision changes
- Document compatibility
3. Constraint Comparison
- Compare primary keys
- Analyze foreign keys
- Check unique constraints
- Verify check constraints
4. Index Analysis
- Compare index definitions
- Identify missing indexes
- Analyze index usage
- Recommend optimizations
5. Stored Procedure Comparison
- Compare procedure signatures
- Identify logic differences
- Detect parameter changes
- Flag deprecated procedures
6. Migration Script Generation
- Generate DDL scripts
- Create rollback scripts
- Handle dependencies
- Order changes correctly
Tool Integrations
| Tool | Databases | Integration Method | |------|-----------|-------------------| | Flyway | Multi | CLI | | Liquibase | Multi | CLI | | Redgate SQL Compare | SQL Server | CLI | | SchemaHero | Kubernetes | CLI | | pgdiff | PostgreSQL | CLI | | mysqldiff | MySQL | CLI |
Output Schema
{
"comparisonId": "string",
"timestamp": "ISO8601",
"source": {
"type": "string",
"connection": "string"
},
"target": {
"type": "string",
"connection": "string"
},
"differences": {
"tables": {
"added": [],
"removed": [],
"modified": []
},
"columns": [],
"constraints": [],
"indexes": [],
"procedures": []
},
"migration": {
"scripts": [],
"order": [],
"rollback": []
}
}
Integration with Migration Processes
- database-schema-migration: Primary comparison tool
- data-format-migration: Schema analysis
Related Skills
data-migration-validator: Post-migration validationquery-translator: SQL conversion
Related Agents
database-migration-orchestrator: Uses for planningdata-architect-agent: Schema design review
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