Matching customer data through multiple passes - 7.0

Data matching

author
Talend Documentation Team
EnrichVersion
7.0
EnrichProdName
Talend Big Data Platform
Talend Data Fabric
Talend Data Management Platform
Talend Data Services Platform
Talend MDM Platform
Talend Real-Time Big Data Platform
task
Data Governance > Third-party systems > Data Quality components > Matching components > Data matching components
Data Quality and Preparation > Third-party systems > Data Quality components > Matching components > Data matching components
Design and Development > Third-party systems > Data Quality components > Matching components > Data matching components
EnrichPlatform
Talend Studio

This scenario applies only to Talend Data Management Platform, Talend Big Data Platform, Talend Real Time Big Data Platform, Talend Data Services Platform, Talend MDM Platform and Talend Data Fabric.

For more technologies supported by Talend, see Talend components.

The Job in this scenario, groups similar customer records by running through two subsequent matching passes (tMatchGroup components) and outputs the calculated matches in groups. Each pass provides its matches to the pass that follows in order for the latter to add more matches identified with new rules and blocking keys.

In this Job:

  • The tMysqlInput component connects to the customer records to be processed.

  • Each of the tGenKey components defines a way to partition data records. The first key partitions data to many groups and the second key creates fewer groups that overlaps the previous blocks depending on the blocking key definition.

  • The tMap component renames the key generated by the second tGenKey component.

  • The first tMatchGroup processes the partitions defined by the first tGenKey, and the second tMatchGroup processes those defined by the second tGenKey.
    Warning:

    The two tMatchGroup components must have the same schema.

  • The tLogRow component presents the matching results after the two passes.