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What is surrogate key?
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Answer / koti
sarrogate key is ssystem generated sequence number,an
artificial key. which can be used in maintaing the history
of the data
| Is This Answer Correct ? | 24 Yes | 3 No |
Answer / sunil kumar singh
Surrogate Key is artificial that is created for
datawarehousing for generating the unique number for each
record. Surrogate key works on the behalf of primary key.
And main purpose of surrogate key is to maintain the
historical record.
| Is This Answer Correct ? | 15 Yes | 3 No |
Answer / nivas
Surrogate key is a system generated sequence numbers. It is
also called artificial key.Sarrogate key using as a primary
key without using sarrogate key we can't do SCD type2
implemenation.
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / rajat singh
Surrogate key is the primary key for the Dimensional table.
Surrogate key is a substitution for the natural primary key.
Data warehouses typically use a surrogate, (also known as
artificial or identity key), key for the dimension tables
primary keys. They can use Infa sequence generator, or
Oracle sequence, or SQL Server Identity values for the
surrogate key.
It is useful because the natural primary key (i.e. Customer
Number in Customer table) can change and this makes updates
more difficult and also used in SCDs to preserve historical
data.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / shan
sarrogate key is ssystem generated sequence number,an
artificial key. which can be used in maintaing the history
of the data
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / ram
surrogate key
is a series of sequential numbers assigned to be foreign key
for the table
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / anil
Surrogate key is a primary key which can be used for
sequence
| Is This Answer Correct ? | 7 Yes | 7 No |
Answer / latha
actually it appears in picture when a critical
column(example location) occurs in a table.In order to avoid
the critical column we are using surrogate key.surrogate key
is also a primary key.
| Is This Answer Correct ? | 4 Yes | 4 No |
Answer / swagatika
IN DWH environment,Every dimension table is integrated with surrogate key,which is byforced created to maintain the consistancy of data warehouse targets.It never generate the alfa numeric number of primary key & also replace the missing values.
The natural primary key ,which is coming from database is considered as alternate key in DWH Environment
| Is This Answer Correct ? | 0 Yes | 0 No |
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