Open Database Connectivity (ODBC) is a Microsoft API for accessing databases based on the X/OPEN CLI. Applications interact with the database through the APIs provided by ODBC, which enhances their portability, scalability, and maintainability.
<a target="_blank" href="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/development-based-on-odbc.html#fig1255101034110">Figure 1</a> shows the system structure of ODBC.
Figure 1 ODBC system structure
<img src="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/figures/odbc-system-structure.png" alt />
openGauss supports ODBC 3.5 in the following environments.
Table 1 OSs Supported by ODBC
<div class="hn-table">
<table>
<thead>
<tr>
<td>OS</td><td>Platform</td></tr>
</thead>
<tbody>
<tr>
<td>CentOS 6.4/6.5/6.6/6.7/6.8/6.9/7.0/7.1/7.2/7.3/7.4</td><td>x86_64</td></tr>
<tr>
<td>CentOS 7.6</td><td>ARM64</td></tr>
<tr>
<td>EulerOS 2.0 SP2/SP3</td><td>x86_64</td></tr>
<tr>
<td>EulerOS 2.0 SP8</td><td>ARM64</td></tr>
</tbody>
</table>
</div>The ODBC Driver Manager running on UNIX or Linux can be unixODBC or iODBC. unixODBC-2.3.0 is used as the component for connecting the database.
Windows has a native ODBC Driver Manager. You can locate Data Sources (ODBC) by choosing Control Panel &gt; Administrative Tools.
<blockquote>
NOTE: The current database ODBC driver is based on an open-source version and may be incompatible with data types tinyint, smalldatetime, and nvarchar2.
</blockquote>
<ul>
<li><a target="_blank" href="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/odbc-packages-dependent-libraries-and-header-files.html">ODBC Packages, Dependent Libraries, and Header Files</a>
</li>
<li><a target="_blank" href="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/configuring-a-data-source-in-the-linux-os.html">Configuring a Data Source in the Linux OS</a>
</li>
<li><a target="_blank" href="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/development-process-1.html">Development Process</a>
</li>
<li><a target="_blank" href="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/example.html">Example</a>
</li>
<li><a target="_blank" href="https://docs.opengauss.org/en/docs/latest/docs/Developerguide/odbc-interface-reference.html">ODBC Interface Reference</a>
</li>
</ul>

Open Database Connectivity (ODBC) is a Microsoft API for accessing databases based on the X/OPEN CLI. Applications interact with the database through the APIs provided by ODBC, which enhances their portability, scalability, and maintainability.

[Figure 1](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/development-based-on-odbc.html#fig1255101034110) shows the system structure of ODBC.

**Figure 1** ODBC system structure

![](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/figures/odbc-system-structure.png align="left")

openGauss supports ODBC 3.5 in the following environments.

**Table 1** OSs Supported by ODBC

| **OS** | **Platform** |
| --- | --- |
| CentOS 6.4/6.5/6.6/6.7/6.8/6.9/7.0/7.1/7.2/7.3/7.4 | x86\_64 |
| CentOS 7.6 | ARM64 |
| EulerOS 2.0 SP2/SP3 | x86\_64 |
| EulerOS 2.0 SP8 | ARM64 |

The ODBC Driver Manager running on UNIX or Linux can be unixODBC or iODBC. unixODBC-2.3.0 is used as the component for connecting the database.

Windows has a native ODBC Driver Manager. You can locate **Data Sources (ODBC)** by choosing **Control Panel** &gt; **Administrative Tools**.

> **NOTE:**  
> The current database ODBC driver is based on an open-source version and may be incompatible with data types tinyint, smalldatetime, and nvarchar2.

* [**ODBC Packages, Dependent Libraries, and Header Files**](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/odbc-packages-dependent-libraries-and-header-files.html)
    
* [**Configuring a Data Source in the Linux OS**](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/configuring-a-data-source-in-the-linux-os.html)
    
* [**Development Process**](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/development-process-1.html)
    
* [**Example**](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/example.html)
    
* [**ODBC Interface Reference**](https://docs.opengauss.org/en/docs/latest/docs/Developerguide/odbc-interface-reference.html)

OS	Platform
CentOS 6.4/6.5/6.6/6.7/6.8/6.9/7.0/7.1/7.2/7.3/7.4	x86_64
CentOS 7.6	ARM64
EulerOS 2.0 SP2/SP3	x86_64
EulerOS 2.0 SP8	ARM64

openGauss Development Based on ODBC