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IDQ (Informatica Data Quality) is a tool that can read the data from transactional sources (databases), clean the data based on the defined rules and generate analytics on required metrics. For ex: Many people provide incorrect Zipcode (Pincode) in address. IDQ can read other details from address such as city/state and correct the Zipcode.
IDQ is used to identify incorrect data and correct it. Developer will develop rules for both identifying and correcting data. IDQ mapping is run first. Once the data is corrected, then Informatica PowerCenter mapping is run which will read the data from transactional data sources and load into Data Warehouse.
IDQ main purpose is to correct the data at the source (transactional data source) itself.
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