What is surrogate key?
- 9 Answers
- 23872 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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 |
what is informatica metadata?
Tell me about MD5 functions in informatica
Explain what transformation and how many are there in informatica?
How mapping parameter and variable works
what are the types of Data warehousing ?
What are active and passive transformations?
Hi Friends, I want lo truncate my records from target before loading current month data,but i dont have permission to truncate with truncate option if u know any other way please give your valuable input for this. Thanks Abhishek
What is the Difference between SetVariable and setmaxvariable in informatica?
how can u connect client to ur informatica sever iff server is located at different place( not local to the client)
i hav a scenario like this i want load data from source to target as follows frist it counts the num of deptno and display with that with count and how many times it reapts along with all the records in source
which T/r we can use it mapping parmeter and mapping variable? and which one is reusable for any mapping mapping parmeter or mapping varibale?
Plz can any one say me how to get the informatica certification materials and dumps
Teradata 
