:original_name: dds_api_reference.html
.. _dds_api_reference:
Before You Start
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This document describes application programming interfaces (APIs), syntax, parameters, and examples of Document Database Service (DDS). You can search for information you need according to :ref:`Table 1 `.
.. _dds_api_reference__table333417544226:
.. table:: **Table 1** Documentation guide
+------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| Section | Description |
+================================================+========================================================================================================================================================+
| :ref:`API Overview ` | DDS API components and API list |
+------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Environment Preparations ` | Preparations before using the APIs, including obtaining the request authentication and project ID |
+------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`API Calling ` | Representational State Transfer (REST) message bodies, calling methods, and examples |
+------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`API Description ` | DDS APIs, including APIs used for querying information about API version, database version, and DB instance specifications, and managing DB instances. |
+------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Appendix ` | Understand the status codes and error codes about DDS APIs. |
+------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+