Interested to Buy Any Domain ? << Click Here >> for more details...
what is surrogatekey ? In ur project in which situation u
has used ? explain with example ?
- 6 Answers
- 14237 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / murali
the surrogate key is the primary key used to avoid the
problem of critical column. let me clarify u with example...
table A:
Cust_no(PK) Cust_name Loc
100 X Mumbai
this is what ur OLAP DHW is having abt Customer X
But, he has changed his address from X to Y. U have to
update this in ur OLAP DWH. then, i u try to insert this
into ur Table A,
Error: Prinary key Constraint violated (Coz,PK is same for
the both the records)... then, LOC is the Critical Column.
to avoid this, we need to generate a primary key either by
user defined or system generated.
| Is This Answer Correct ? | 11 Yes | 0 No |
Answer / dr.jornalist
Surrogate Key:- Surrogate key is a system generated primary
key used in informatica for maintaining history of values.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / soujanya
surrogate key is the system generated key to avoid primary
key conatraint.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / raghureddy
It has system generated artificial primary key values .
which allows to maintian historical data in dwh
| Is This Answer Correct ? | 0 Yes | 0 No |
Global and Local shortcuts. Advantages.
I have been working in Informix-4gl for the past 2 years in an MNC company.But I'm interested to work in Business Intelligence tools. Is it possible to change the technology now? I'm really confused, please help me
How to create the list file having millions of flat files while indirect loading in informatica? In indirect file loading, suppose we have less no.of flat files then we can enter files names manually in list file creation. If millions of files are there, how can we enter the flat file names in list file?
What are multi-group transformations?
I want to run a informatica worklow after complition of oracle procedure. That procedure is not running through informatica and can be run at any time in database. Informatica is in windows environment. Is it possible ? If yes please explain.
AT the max how many transformations and mapplets can we use in a mapping ?
1 Answers Cap Gemini, Cognizant,
tell me the informatica architecture
What can we do to improve the performance of informatica aggregator transformation?
How to calculate the cache size if say we are doing a performance check on a mapping and found that a particular cache needs to be changed. Is there a formula to calculate this! i know that informatica has a auto option available but how to calculate manually?
performance wise which one is better in joiner and lookup transformation?why?explain clearly?
What is dimensional table?
why sequence generator should not directly connected to joiner transformation ?
Teradata 
