# yii\db\oci

> 7 classes of the yii\db\oci namespace.

[API reference](/docs/api/index.md) › [yii](/docs/api/yii/index.md) › [db](/docs/api/yii/db/index.md) › oci

## Namespaces

| Namespace | Types |
| --- | --- |
| [`yii\db\oci\conditions`](/docs/api/yii/db/oci/conditions/index.md) | 2 |

## Classes

| Class | Summary |
| --- | --- |
| [`ColumnSchema`](/docs/api/yii/db/oci/columnschema/index.md) | Represents the metadata of a column in an Oracle database table. |
| [`ColumnSchemaBuilder`](/docs/api/yii/db/oci/columnschemabuilder/index.md) | ColumnSchemaBuilder is the schema builder for Oracle databases. |
| [`Command`](/docs/api/yii/db/oci/command/index.md) | Command represents an Oracle SQL statement to be executed against a database. |
| [`LobValue`](/docs/api/yii/db/oci/lobvalue/index.md) final | Represents an Oracle `BLOB` value bound through a PDO LOB locator. |
| [`LobValueBuilder`](/docs/api/yii/db/oci/lobvaluebuilder/index.md) final | Builds the SQL value expression for an [`LobValue`](/docs/api/yii/db/oci/lobvalue/index.md). |
| [`QueryBuilder`](/docs/api/yii/db/oci/querybuilder/index.md) | QueryBuilder is the query builder for Oracle databases (version 12.1 and above). |
| [`Schema`](/docs/api/yii/db/oci/schema/index.md) | Schema is the class for retrieving metadata from an Oracle database. |