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The batch requests feature allows you to send multiple (IN-Only) requests to a datasource using a single operation (batch operation). Follow the steps given below to define a data service that can invoke batch requests:

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1. Download the product installer from here, and run the installer.
   

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   EI6xx:Installing the ProductEI6xx: Installing the Product nopanel true

2. Install the MySQL server.
3. Download the JDBC driver for MySQL from here and copy it to your <EI_HOME>/lib directory.

4. Create the following database: Company

   Code Block
   CREATE DATABASE Company;

5. Create the Employees table:

   Code Block
   USE Company; CREATE TABLE `Employees` (`EmployeeNumber` int(11) NOT NULL, `FirstName` varchar(255) NOT NULL, `LastName` varchar(255) DEFAULT NULL, `Email` varchar(255) DEFAULT NULL, `JobTitle` varchar(255) DEFAULT NULL, `OfficeCode` int(11) NOT NULL, PRIMARY KEY (`EmployeeNumber`,`OfficeCode`));

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1. Start the WSO2 ESB profile.

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   Localtabgroup Localtab active true title On MacOS/Linux/CentOS Open a terminal and execute the following command: Code Block sudo wso2ei-6.46.0-integrator Localtab title On Windows Go to Start Menu -> Programs -> WSO2 -> Enterprise Integrator 6.46.0 Integrator. This will open a terminal and start the ESB profile.

2. Open the ESB profile's Management Console using https://localhost:9443/carbon, and log in using admin as the username and the password.
3. Click Data Service > Create.
4. Add a name for the data service, such as BatchRequestDataService.
5. Select the Enable Batch Requests check box.
   
6. Click Next and add a new datasource.

7. Give an ID for the datasource, and create the connection to the Company database.

   Datasource ID	Datasource
   Datasource Type	RDBMS
   Datasource Type (Default/External)	Leave Default selected.
   Database Engine	MySQL
   Driver Class	com.mysql.jdbc.Driver
   URL	jdbc:mysql://localhost:3306/Company
   User Name	Enter your MySQL server's username.
   Password	Enter your MySQL server's password. If you have not assigned a password, keep this field empty.

   Example:
   

8. Save the datasource details, and click Next to open the Queries screen.

9. Click  Add New Query  to specify the query details:

1. Enter addEmployeeQuery as the query ID.

2. Enter the following SQL dialect:

   Code Block
   insert into Employees (EmployeeNumber, FirstName, LastName, Email, JobTitle, OfficeCode) values(:EmployeeNumber,:FirstName,:LastName,:Email,:JobTitle,:Officecode)

3. Click Generate Input Mapping and input mappings will be generated automatically for the EmployeeNumber, FirstName, LastName, Email, JobTitle, and OfficeCode fields.

10. Save the query, and click Next to open the Operations screen.

11. Click Add New Operation, and create an operation for the addEmployeeQuery query as shown below.
    
12. Save the operation.
13. Click Finish to complete the data service creation process.

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