Big Data Management User Guide > Mappings in the Native Environment > Hive Mappings
  

Hive Mappings

Based on the mapping environment, you can read data from or write data to Hive.
In a native environment, you can read data from Hive. To read data from Hive, complete the following steps:
  1. 1. Create a Hive connection.
  2. 2. Configure the Hive connection mode to access Hive as a source or target.
  3. 3. Use the Hive connection to create a data object to read from Hive.
  4. 4. Add the data object to a mapping and configure the mapping to run in the native environment.
You can write to Hive in a Hadoop environment. To write data to Hive, complete the following steps:
  1. 1. Create a Hive connection.
  2. 2. Configure the Hive connection mode to access Hive as a source or target.
  3. 3. Use the Hive connection to create a data object to write to Hive.
  4. 4. Add the data object to a mapping and configure the mapping to run in the Hadoop environment.
You can define the following types of objects in a Hive mapping:
Validate and run the mapping. You can deploy the mapping and run it or add the mapping to a Mapping task in a workflow.

Hive Mapping Example

Your organization, HypoMarket Corporation, needs to analyze customer data. Create a mapping that reads all the customer records. Create an SQL data service to make a virtual database available for end users to query.
You can use the following objects in a Hive mapping:
Hive input
The input file is a Hive table that contains the customer names and contact details.
Create a relational data object. Configure the Hive connection and specify the table that contains the customer data as a resource for the data object. Drag the data object into a mapping as a read data object.
SQL Data Service output
Create an SQL data service in the Developer tool. To make it available to end users, include it in an application, and deploy the application to a Data Integration Service. When the application is running, connect to the SQL data service from a third-party client tool by supplying a connect string.
You can run SQL queries through the client tool to access the customer data.