# Zog

- [Quick Start](/docs): Define a model, create a database adapter, and read/write MongoDB records through Zog.
- [Schema Evolution](/docs/schema-evolution): Keep old MongoDB documents readable while your current Zod schemas stay clean.
- [Indexes](/docs/indexes): Declare, diff, and sync MongoDB indexes next to the model that owns them.
- [References](/docs/references): Model fields that contain another Zog model's primary key.
- [Model Diagrams](/docs/diagrams): Render Zog models, embedded documents, indexes, and references as ASCII or Mermaid diagrams.