# Database polyfills (Prisma ORM v6) (/docs/orm/v6/prisma-client/setup-and-configuration/database-polyfills)

Prisma Client provides features that are not achievable with relational databases. These features are referred to as "polyfills" and explained on this page.

Location: ORM > v6 > Prisma Client > Setup and Configuration > Database polyfills

Prisma Client provides features that are typically either not achievable with particular databases or require extensions. These features are referred to as _polyfills_. For all databases, this includes:

- Initializing [ID](/guides/prisma-schema-v6-data-model-models#defining-an-id-field) values with `cuid` and `uuid` values
- Using [`@updatedAt`](/guides/prisma-schema-v6-data-model-models#defining-attributes) to store the time when a record was last updated

For relational databases, this includes:

- [Implicit many-to-many relations](/guides/prisma-schema-v6-data-model-relations-many-to-many-relations#implicit-many-to-many-relations)

For MongoDB, this includes:

- [Relations in general](/guides/prisma-schema-v6-data-model-relations) - foreign key relations between documents are not enforced in MongoDB

## Related pages

- [`Configuring error formatting`](/guides/prisma-client-v6-setup-and-configuration-error-formatting): This page explains how to configure the formatting of errors when using Prisma Client.
- [`Custom model and field names`](/guides/prisma-client-v6-setup-and-configuration-custom-model-and-field-names): Learn how you can decouple the naming of Prisma models from database tables to improve the ergonomics of the generated Prisma Client API.
- [`Database connections`](/guides/prisma-client-v6-setup-and-configuration-databases-connections): Databases connections
- [`Generating Prisma Client`](/guides/prisma-client-v6-setup-and-configuration-generating-prisma-client): This page explains how to generate Prisma Client. It also provides additional context on the generated client, typical workflows and Node.js configuration.
- [`Instantiating Prisma Client`](/guides/prisma-client-v6-setup-and-configuration-instantiate-prisma-client): How to create and use an instance of PrismaClient in your app.

## Related pages

- [Authentication & Tools](./authentication-tools-index.md)
- [Build](./build-index.md)
- [Changelog](../changelog.md)
- [Concepts](./concepts-index.md)
- [Console commands](./console-commands-index.md)
- [Contract Authoring](./contract-authoring-index.md)
- [Core Concepts](./core-concepts-index.md)
- [Data Modeling](./data-modeling-index.md)
- [Database](./database-index.md)
- [DB commands](./db-commands-index.md)

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