A Copy Job copies an existing table to another new or existing table. Instances of
JobConfiguration for this type are implemented by CopyJobConfiguration.
EXTRACT
An Extract Job exports a BigQuery table to Google Cloud Storage. Instances of
JobConfiguration for this type are implemented by ExtractJobConfiguration.
LOAD
A Load Job loads data from one of several formats into a table. Instances of
JobConfiguration for this type are implemented by LoadJobConfiguration.
QUERY
A Query Job runs a query against BigQuery data. Instances of JobConfiguration for
this type are implemented by QueryJobConfiguration.