IoTDB: IoTDB是针对时间序列数据收集、存储与分析一体化的数据管理引擎,主要用于物联网

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ODBC-Example

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# ODBC
With IoTDB JDBC, IoTDB can be accessed using the ODBC-JDBC bridge. The example program in "odbc" can write and read data through ODBC using the bridge.

## Dependencies
* IoTDB-JDBC's jar-with-dependency package
* ODBC-JDBC bridge (e.g. ZappySys JDBC Bridge)

## Deployment
### Preparing JDBC package
Download the source code of IoTDB, and execute the following command in root directory:
```shell
mvn clean package -pl iotdb-client/jdbc -am -DskipTests -P get-jar-with-dependencies
```
Then, you can see the output `iotdb-jdbc-1.3.2-SNAPSHOT-jar-with-dependencies.jar` under `iotdb-client/jdbc/target` directory.

### Preparing ODBC-JDBC Bridge
*Note: Here we only provide one kind of ODBC-JDBC bridge as the instance. Readers can use other ODBC-JDBC bridges to access IoTDB with the IOTDB-JDBC.*
1. **Download Zappy-Sys ODBC-JDBC Bridge**:
 Enter the https://zappysys.com/products/odbc-powerpack/odbc-jdbc-bridge-driver/ website, and click "download".
 
 ![ZappySys_website.jpg](https://alioss.timecho.com/upload/ZappySys_website.jpg)
 
2. **Prepare IoTDB**: Set up IoTDB cluster, and write a row of data arbitrarily.
 ```sql
 IoTDB > insert into root.ln.wf02.wt02(timestamp,status) values(1,true)
 ```
 
3. **Deploy and Test the Bridge**:
 1. Open ODBC Data Sources(32/64 bit), depending on the bits of Windows. One possible position is `C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Administrative Tools`.

![ODBC_ADD_EN.jpg](https://alioss.timecho.com/upload/ODBC_ADD_EN.jpg)
 
 3. Click on "add" and select ZappySys JDBC Bridge.
 
 ![ODBC_CREATE_EN.jpg](https://alioss.timecho.com/upload/ODBC_CREATE_EN.jpg)
 
 5. Fill in the following settings:

| Property | Content | Example |
 |---------------------|-----------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------|
 | Connection String | jdbc:iotdb://\<The IP of IoTDB>:\<The rpc port of IoTDB>/ | jdbc:iotdb://127.0.0.1:6667/ |
 | Driver Class | org.apache.iotdb.jdbc.IoTDBDriver | org.apache.iotdb.jdbc.IoTDBDriver |
 | JDBC driver file(s) | The path of IoTDB JDBC jar-with-dependencies | C:\Users13361円\Documents\GitHub\iotdb\iotdb-client\jdbc\target\iotdb-jdbc-1.3.2-SNAPSHOT-jar-with-dependencies.jar |
 | User name | IoTDB's user name | root |
 | User password | IoTDB's password | root |
 
 ![ODBC_CONNECTION.png](https://alioss.timecho.com/upload/ODBC_CONNECTION.png)
 
 6. Click on "Test Connection" button, and a "Test Connection: SUCCESSFUL" should appear.
 
 ![ODBC_CONFIG_EN.jpg](https://alioss.timecho.com/upload/ODBC_CONFIG_EN.jpg)
 
 7. Click the "Preview" button above, and replace the original query text with `select * from root.**`, then click "Preview Data", and the query result should correctly.
 
 ![ODBC_TEST.jpg](https://alioss.timecho.com/upload/ODBC_TEST.jpg)

## Operate IoTDB's data with ODBC example
After correct deployment, you can use the example program to operate IoTDB's data.

This program can write data into IoTDB, and query the data we have just written. You can directly open the "odbc-example" with JetBrains Rider and run it.