# Configuring input data and key generation

### In this section

* [Connecting to the input data](https://help.qlik.com/talend/en-US/components/7.3/data-matching/matching-customer-data-through-multiple-passes-connecting-to-input-data)
* [Configuring the key generation for the first pass](https://help.qlik.com/talend/en-US/components/7.3/data-matching/configuring-key-generation-for-first-pass)
* [Configuring the key generation for the second pass](https://help.qlik.com/talend/en-US/components/7.3/data-matching/configuring-key-generation-for-second-pass)