Modify Schema

Modify existing schema in Bknd: rename entities/fields, change field types, or alter constraints.

Prerequisites

• Existing Bknd app with entities (see bknd-create-entity)
• For code mode: Access to bknd.config.ts
• Backup your database before destructive changes

Critical Concept: Destructive vs Non-Destructive Changes

Bknd's schema sync detects differences between your code and database. Some changes are safe; others cause data loss.

Non-Destructive (Safe)

• Adding new entities
• Adding new fields (nullable or with default)
• Adding new indices
• Loosening constraints (removing .required())