The elapsed interval between the scan time and the timestamp of the most recent change to the database. This includes any change to the data (inserts, updates, deletes) as well as any change to the schema.
Source
metadata
Computation
The compute method depends on the database. Soda requires specific metadata fields that are different for every database.No sampling used.
Exceptions
In Redshift, adding columns is not part of last_modification_time.
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