# 头文件

* [oh_preferences.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-preferences-h)  
* [oh_preferences_err_code.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-preferences-err-code-h)  
* [oh_preferences_option.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-preferences-option-h)  
* [oh_preferences_value.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-preferences-value-h)  
* [data_asset.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-data-asset-h)  
* [oh_cursor.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-cursor-h)  
* [oh_data_value.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-data-value-h)  
* [oh_data_values.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-data-values-h)  
* [oh_data_values_buckets.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-data-values-buckets-h)  
* [oh_predicates.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-predicates-h)  
* [oh_rdb_crypto_param.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-rdb-crypto-param-h)  
* [oh_rdb_transaction.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-rdb-transaction-h)  
* [oh_rdb_types.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-rdb-types-h)  
* [oh_value_object.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-value-object-h)  
* [oh_values_bucket.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-oh-values-bucket-h)  
* [relational_store.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-relational-store-h)  
* [relational_store_error_code.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-relational-store-error-code-h)  
* [udmf.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-udmf-h)  
* [udmf_err_code.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-udmf-err-code-h)  
* [udmf_meta.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-udmf-meta-h)  
* [uds.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-uds-h)  
* [utd.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-utd-h)