# use_ns and use_db

The .use_ns() and .use_db() methods for the SurrealDB Rust SDK switch to a specific namespace and database.

Switch to a specific namespace and database.

```rust title="Method Syntax"
db.use_ns(ns).use_db(db)
```

## Arguments

<table>
    <thead>
        <tr>
            <th colspan="2" scope="col">Argument</th>
            <th colspan="2" scope="col">Type</th>
            <th colspan="2" scope="col">Description</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td colspan="2" scope="row" data-label="Argument">
                <code>ns</code>
            </td>
            <td colspan="2" scope="row" data-label="Description">
                Switches to a specific namespace.
            </td>
        </tr>
        <tr>
            <td colspan="2" scope="row" data-label="Argument">
                <code>db</code>
            </td>
            <td colspan="2" scope="row" data-label="Description">
                Switches to a specific database.
            </td>
        </tr>
    </tbody>
</table>

## Example usage
```rust
use surrealdb::engine::remote::ws::Ws;
use surrealdb::Surreal;

#[tokio::main]
async fn main() -> surrealdb::Result<()> {
    let db = Surreal::new::<Ws>("127.0.0.1:8000").await?;
    db.use_ns("main").use_db("main").await?;
    Ok(())
}
```

## See also

* [.use_db() method on Docs.rs](https://docs.rs/surrealdb/latest/surrealdb/struct.Surreal.html#method.use_db)
* [.use_ns() method on Docs.rs](https://docs.rs/surrealdb/latest/surrealdb/struct.Surreal.html#method.use_ns)