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What does unloading of data refer to? How can the ownership of all of a user's objects change during a data pump import?

  1. The reading of data from external datafiles into external tables REMAP_SCHEMA=source_schema:targer_schema

  2. The writing of data from Oracle tables to external datafiles REMAP_TABLESPACE=source_tablespace:target_tablespace

  3. The writing of data from external datafiles into external tables FROMUSER TOUSER

  4. The reading of data from Oracle tables into external datafilesREMAP_TABLESPACE=source_tablespace:source_tablespace
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