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The Dataflow programming model

Cloud Dataflow runner services execute various data processing jobs that are created using the Dataflow SDK in a programming model that simplifies large-scale data processing.

We have our code programming model divided in four major components:

Pipelines: Represents a single, repeatable job from start to finish
PCollections: Represents a set of data in your pipeline
Transforms: Performs processing on the elements of PCollection
I/O Sources and Sinks: Provides data source / data sink APIs for pipeline I/O

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