# Data sources (Prisma ORM v7) (/docs/orm/v7/prisma-schema/overview/data-sources)

Data sources enable Prisma to connect to your database. This page explains how to configure data sources in your Prisma schema

Location: ORM > v7 > Prisma Schema > Overview > Data sources

A data source determines how Prisma ORM connects to your database, and is represented by the [`datasource`](/guides/reference-6-v7-reference-prisma-schema-reference#datasource) block in the Prisma schema. Connection details (such as the database URL) are configured in [Prisma Config](/guides/reference-6-v7-reference-prisma-config-reference). The following data source uses the `postgresql` provider:

```prisma
datasource db {
  provider = "postgresql"
}
```

A Prisma schema can only have _one_ data source. However, you can:

- [Override the database connection when creating your `PrismaClient`](/guides/reference-6-v7-reference-prisma-client-reference)
- [Specify a different **database** for Prisma Migrate's shadow database if you are working with cloud-hosted development databases](/guides/prisma-migrate-v7-understanding-prisma-migrate-shadow-database#cloud-hosted-shadow-databases-must-be-created-manually)

## Securing database connections

Some data source `provider`s allow you to configure your connection with SSL/TLS **by specifying certificate locations in your connection configuration**.

- [Configuring an SSL connection with PostgreSQL](/guides/core-concepts-v7-supported-databases-postgresql#common-patterns)
- [Configuring an SSL connection with MySQL](/guides/core-concepts-v7-supported-databases-mysql#common-patterns)
- [Configure a TLS connection with Microsoft SQL Server](/guides/core-concepts-v7-supported-databases-sql-server#connection-details)

See the database-specific documentation above for examples of SSL/TLS connection configuration in Prisma Config.

## Related pages

- [`Generators`](/guides/prisma-schema-v7-overview-generators): Generators in your Prisma schema specify what assets are generated when the `prisma generate` command is invoked. This page explains how to configure generators
- [`Schema location`](/guides/prisma-schema-v7-overview-location): Documentation regarding proper location of Prisma Schema including default naming and multiple files.

## 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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