# Hierarchy [Serialize](_fileflatdb_serialize_.serialize.md) **↳ File** ↳ [Cache](_fileflatdb_cache_.cache.md) # Constructors ## constructor ⊕ **new File**(base: *`string`*, file: *`string`*, options: *[BaseDbOptions](../modules/_types_.md#basedboptions)*): [File](_fileflatdb_file_.file.md) *Defined in [FileFlatDb/File.ts:19](https://github.com/polkadot-js/common/blob/1e6eb2c/packages/db/src/FileFlatDb/File.ts#L19)* **Parameters:** | Name | Type | | ------ | ------ | | base | `string` | | file | `string` | | options | [BaseDbOptions](../modules/_types_.md#basedboptions) | **Returns:** [File](_fileflatdb_file_.file.md) ___