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

> For the complete Prisma documentation index, see [llms.txt](https://www.prisma.io/docs/llms.txt). A markdown version of any docs page is available by appending `.md` to its URL.

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`](https://www.prisma.io/docs/orm/v7/reference/prisma-schema-reference#datasource) block in the Prisma schema. Connection details (such as the database URL) are configured in [Prisma Config](https://www.prisma.io/docs/orm/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`](https://www.prisma.io/docs/orm/v7/reference/prisma-client-reference)
* [Specify a different **database** for Prisma Migrate's shadow database if you are working with cloud-hosted development databases](https://www.prisma.io/docs/orm/v7/prisma-migrate/understanding-prisma-migrate/shadow-database#cloud-hosted-shadow-databases-must-be-created-manually)

## Securing database connections [#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](https://www.prisma.io/docs/orm/v7/core-concepts/supported-databases/postgresql#common-patterns)
* [Configuring an SSL connection with MySQL](https://www.prisma.io/docs/orm/v7/core-concepts/supported-databases/mysql#common-patterns)
* [Configure a TLS connection with Microsoft SQL Server](https://www.prisma.io/docs/orm/v7/core-concepts/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`](https://www.prisma.io/docs/orm/v7/prisma-schema/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`](https://www.prisma.io/docs/orm/v7/prisma-schema/overview/location): Documentation regarding proper location of Prisma Schema including default naming and multiple files.