name: Backend Models description: Define database models and ORM classes with proper data types, relationships, constraints, and validation logic following framework conventions. Use this skill when working with model definitions, schema classes, entity files, or database table representations in files like models.py, entities.ts, schema.prisma, or models/. Applies when defining table structures, relationships (one-to-many, many-to-many), validation rules, timestamps, indexes, foreign keys, and data integrity constraints at the database level.

Backend Models

When creating or modifying model files like models.py, models.ts, entities.ts, models/User.js, or schema.prisma
When working in model directories such as models/, entities/, orm/, or database/
When defining database table structures with columns, data types, and constraints
When establishing relationships between models (one-to-many, many-to-many, belongs-to, has-many)
When adding timestamps (created_at, updated_at) to models for auditing purposes
When implementing model-level validation rules before database operations
When creating or modifying foreign key relationships and cascade behaviors
When defining database constraints like NOT NULL, UNIQUE, CHECK constraints, or default values
When choosing appropriate data types (INTEGER, VARCHAR, TEXT, TIMESTAMP, ENUM, etc.) for columns
When adding indexes to foreign keys or frequently queried fields for performance optimization
When working with ORM classes in Django, SQLAlchemy, TypeORM, Prisma, Sequelize, or similar frameworks

This Skill provides Claude Code with specific guidance on how to adhere to coding standards as they relate to how it should handle backend models.

For details, refer to the information provided in this file: backend models