Oracle ETL Interview Question:

How to determine what records to extract?

Submitted by: Administrator

When addressing a table some dimension key must reflect the need for a record to get extracted. Mostly it will be from time dimension (e.g. date >= 1st of current mth) or a transaction flag (e.g. Order Invoiced Stat). Foolproof would be adding an archive flag to record which gets reset when record changes.
Submitted by: Administrator