---

name: Backend Models description: Define database models with clear naming, appropriate data types, proper constraints, and well-defined relationships. Use this skill when creating new database models or entities, defining model schemas, implementing model validations, setting up model relationships (one-to-one, one-to-many, many-to-many), adding timestamps or audit fields, defining database constraints (NOT NULL, UNIQUE, foreign keys), choosing appropriate data types for fields, implementing model hooks or lifecycle methods, creating indexes on model fields, working with ORM model files, or refactoring existing model definitions. Use when working with model files in directories like models/, entities/, or schema/ for ORMs like Sequelize, TypeORM, Prisma, SQLAlchemy, ActiveRecord, Django models, or Mongoose.

When to use this skill

• When creating new database model or entity classes
• When defining model schemas and field definitions
• When implementing model-level validations
• When setting up model relationships (one-to-one, one-to-many, many-to-many)
• When adding timestamps, audit fields, or soft delete functionality
• When defining database constraints (NOT NULL, UNIQUE, foreign keys)
• When choosing appropriate data types for model fields
• When implementing model hooks, lifecycle methods, or computed properties
• When creating indexes on model fields
• When working with model files in models/, entities/, or schema/ directories
• When refactoring existing model definitions for consistency
• When working with ORMs like Sequelize, TypeORM, Prisma, SQLAlchemy, ActiveRecord, Django models, or Mongoose
• When defining cascade behaviors for relationships

Backend Models

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.

Instructions

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