Mapping in Informatica: Definition and Usage in ETL Process

A mapping in Informatica is a visual representation of a data flow from source to target. It defines how data is transformed from its source format to the target format using various transformations and rules.

In the ETL (Extract, Transform, Load) process, mappings play a crucial role in transforming and delivering data accurately and efficiently. They help in extracting data from multiple sources, applying necessary transformations, and loading the transformed data into the target system.

Mapping in Informatica consists of various components such as source, target, transformations, and mappings that define the data flow and logic to be applied during the transformation process. The mapping designer tool in Informatica allows developers to design, configure, and manage mappings effectively.

Overall, mappings in Informatica are essential for creating data integration solutions that ensure data accuracy, consistency, and reliability in the ETL process.