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Data Types and Encodings Supported by IoTDB IoTDB supports the following data types and encodings. For details, see Table 1. Table 1 Data types and encodings supported by IoTDB Type Description Supported Encoding BOOLEAN Boolean PLAIN, RLE INT32 Integer PLAIN, RLE, TS_2DIFF, GORILLA
IoTDB UDF Sample Code and Operations Complete UDF Sample Code For details, see IoTDB UDF Sample Code. Procedure Register a UDF. Register a UDF with a full class name com.xxx.bigdata.iotdb.UDTFExample as follows: Package the project into a JAR. If you use Maven to manage your project
Backing Up IoTDB Service Data Scenario To ensure IoTDB service data security routinely or before a major operation on IoTDB (such as upgrade or migration), you need to back up IoTDB service data. The backup data can be used to recover the system if an exception occurs or the operation
Preparing the Configuration Files for Connecting to the IoTDB Cluster Preparing for User Authentication For an MRS cluster with Kerberos authentication enabled, you need to prepare a user who has the operation permission on related components for program authentication. The following
Commissioning the IoTDB Application in the Local Windows Environment Scenario Run applications in a Windows development environment after application code is developed. If the local and cluster service planes can communicate with each other, you can perform the commissioning on the
Preparing the Configuration Files for Connecting to the IoTDB Cluster Preparing the Configuration Files of the Running Environment During the development or a test run of the program, you need to use cluster configuration files to connect to an MRS cluster. The configuration files
IoT Device Access (IoTDA) The Organizations service provides Service Control Policies (SCPs) to set access control policies. SCPs do not actually grant any permissions to a principal. They only set the permissions boundary for the principal. When SCPs are attached to a member account
IoTDB Development Guide (Normal Mode) Overview IoTDB Environment Preparations Application Development Application Commissioning More Information
IoTDB Development Guide (Security Mode) IoTDB Application Development Overview IoTDB Development Process IoTDB Environment Preparations Application IoTDB Development IoTDB Application Commissioning IoTDB Java API
Connecting to IoTDA Based on the BearPi-HM_Nano Development Board and OpenHarmony This section uses BearPi-HM_Nano development board as an example to describe how to connect an OpenHarmony 3.0 device to IoTDA using the huaweicloud_iot_link SDK. Prerequisites You have registered a
Does the IoTDA Support Device Registration in Batches? IoTDA allows an application to call the API Creating a Batch Task to register a batch of devices. Alternatively, you can perform batch registration on the IoTDA console. This topic describes how to use the IoTDA console to register
Can I Enable IoTDA for IAM Users or Sub-Projects? 1. You can enable IoTDA as an IAM user. However, the enabled IoTDA service belongs to the IAM master account. That is, the master account is the payment entity. 2. IoTDA cannot be enabled for sub-projects created using IAM. Parent
What Are the Changes Brought by the Integration of IoT Device Management and IoTDA? The changes are as follows: Functions: IoTDA has integrated the functions of IoT Device Management while still keeping the original IoTDA functions. Billing: If you have enabled IoTDA before, you can
How Does an Application Obtain Device Data from IoTDA? You need to configure data forwarding rules using the rule engine on IoTDA to forward data to the AMQP or MQTT message queue, and then pull data from the application. Alternatively, you can forward data to a third-party application
