Answer / dr.karthik

In a current database, the surrogate key is the primary key,
generated by the database management system and not derived
from any application data in the database. The only
significance of the surrogate key is to act as the primary key.

Dr.Karthik.k

Answer / vidya

Surrogate Key is unique identifier Key in Production
System, to avoid data duplication and redundancy in DWH

Answer / nareshkumar

A surrogate key is a substitution for the natural primary
key. It is just a unique identifier for each row that can
be used for the primary key to the table.

Answer / pravin

surrogate key is a system generated key which is defined at
database level to avoid the duplication of records it dosent
mantain any relations btwn tables like as primary key and it
only allows unique data there is a command with sequence in
oracle..just check it out

Answer / 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

Answer / swades

an artificial key which can be used to remove redundancy

Answer / arun3409

A surrogate key is an automatic system generated unique key.

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3 Answers  

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2 Answers  

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1 Answers  

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