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A single hashed files can act as targets and sources both a source and target within the same job.
Furthermore, a single hashed files can be referenced by multiple source and target stages within the same job.
A hashed file stage can use keys values to enable the upsert of its data.
Hashed files provide database record locking so that a single job or multiple jobs can read from and write to the same hashed file concurrently.
Commonly considered Hashed File alternatives such as Sequential Files, Data Sets and File Sets do not are unable to support the functionality described above.
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