What is surrogate key?

Answer Posted / 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



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How do you load first and last records into target table?

671


What are the different lookup cache(s)?

622


What does command task mean?

614


Suppose we configure sorter transformations in the master and detail pipelines with the following sorted ports in order: item_no, item_name, price. When we configure the join condition, what are the guidelines we need to follow to maintain the sort order?

656


What is the use of source qualifier?

677






How is Source Side push down optimization different to just providing a SQL override in Source qualifier transformation.

1338


Enlist the various types of transformations.

562


What is informatica etl tool?

556


What are the transformations that cannot be placed between the sort origin and the joiner transformation so that we do not lose the input sort order?

794


HOW TO PROCESS THE ROWS FROM JOINER AND EXPRESSION TRANSFORAMTION TO SORTER TRANSFORMATION

1482


Explain what is informatica metadata and where is it stored?

615


What are the new features of Power Center 5.0?

1235


What are the guidelines to be followed while using union transformation?

643


Separate from an archive server and a powerhouse?

499


Where are the source flat files kept before running the session?

628