# Configuring CDC

Before being able to retrieve modified data from the CRM data warehouse, you must:

1. Set up the database connection dedicated to CDC,

2. Set up a database connection to the source data and identify the table to catch,

3. Set the connection between the CDC and the data.

### In this section

* [Create connections and subscribers](https://help.qlik.com/talend/en-US/components/7.2/change-data-capture/tmysqlcdc-tlogrow-tmap-tmysqloutput-create-connections-and-subscribers-standard-component-enterprise-in)
* [Specify which table the subscriber wants to subscribe to and then activate the subscription](https://help.qlik.com/talend/en-US/components/7.2/change-data-capture/tmysqlcdc-tlogrow-tmap-tmysqloutput-specify-which-table-subscriber-wants-to-subscribe-to-and-then-activate-subscription-standard-component-enterprise)
* [Create the new subscribers Sub_Finance and Sub_Sales for the Treasury and Sales departments respectively](https://help.qlik.com/talend/en-US/components/7.2/change-data-capture/tmysqlcdc-tlogrow-tmap-tmysqloutput-create-new-subscribers-sub-finance-and-sub-sales-for-treasury-and-sales-departments-respectively-standard-component-enterprise)