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Can any body will explain about sarrogat key?
Thanks in advance...........Prakash
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Answer Posted / vidhya
Surrogate key: Also known as Sequence id in ORACLE or
Identity column in SQL SERVER (whatever you call to your
convenience).Auto generated keys by the system.
DWH: Used here as a substitute of existing primary key to
encourage duplicates and thereby misleading the rule of
third normal form. Thus maintaining the history of records
which supports SCD(slowly Changing Dimension III)
3NF: Each table should have one primary key
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