what is main difference between change capture and change
apply stages

Answers were Sorted based on User's Feedback



what is main difference between change capture and change apply stages..

Answer / shady

change capture stage catch holds of changesfrom two
different datasets and generates a new column called change
code....change code has values
0-copy
1-insert
2-delete
3-edit/update

where as change apply stage applies these changes back to
those data sets based on the chanecode column

Is This Answer Correct ?    40 Yes 2 No

what is main difference between change capture and change apply stages..

Answer / dharma kaveli

the stage compares two data set(after and before) and
makes a record of the differences.
change apply stage combine the changes from the change
capture stage with the original before data set to
reproduce the after data set

Is This Answer Correct ?    20 Yes 0 No

what is main difference between change capture and change apply stages..

Answer / abdullah

read answer 2 first because i`m appending this answer to it so u can understand more.

*change capture views you the records that were change only, without telling you the rest of of the original records
ex: if one records was changed among 5 records then it will view it alone.
-(it will take two input, the before data set and the after data set)

*change apply should take the original data set and the change capture data set and then apply the change to the original copy as an output. as a result you have now all the records including the new and changed ones.

Is This Answer Correct ?    3 Yes 0 No

what is main difference between change capture and change apply stages..

Answer / vin

please explain in a detailed manner

Is This Answer Correct ?    7 Yes 5 No

Post New Answer

More Data Stage Interview Questions

hi iam new to this tooliam cmpltied to know abt datastage so now iam in project tell me whole step by step what iam doing iwnt to go with exp so plz hlp me pals

0 Answers  


State the difference between an operational datastage and a data warehouse?

0 Answers  


Describe routines in datastage? Enlist various types of routines.

0 Answers  


eno ename esal acct1 acct2 amount1 amount2 100 suresh 10000 sbi1 sbi2 1000 2000 this is our sourse data i would loke to disply like this eno ename esal acct amount 100 suresh 10000 sbi1 1000 100 suresh 10000 sbi2 2000

2 Answers   HCL,


what are the errors,warnings in datastage

0 Answers   Syntel, Wipro,






I have 2 files 1st contains duplicate records only, 2nd file contains Unique records.EX: File1: 1 subhash 10000 1 subhash 10000 2 raju 20000 2 raju 20000 3 chandra 30000 3 chandra 30000 File2: 1 subhash 10000 5 pawan 15000 7 reddy 25000 3 chandra 30000 Output file:-- capture all the duplicates in both file with count. 1 subhash 10000 3 1 subhash 10000 3 1 subhash 10000 3 2 raju 20000 2 2 raju 20000 2 3 chandra 30000 3 3 chandra 30000 3 3 chandra 30000 3

2 Answers   TCS,


Which warehouse using in your datawarehouse

0 Answers   IBM,


How many types of stage?

0 Answers  


one file contains col1 100 200 300 400 500 100 300 600 300 from this i want to retrive the only duplicate like this tr1 100 100 300 300 300 how it's possible in datastage?can any one plz explain clearley..........?

8 Answers   IBM,


What is the difference b/w Hash file and Lookup Fileset stages?

1 Answers  


I have a few records all are same structures data, I want to store data in multiple targets how?

4 Answers   Polaris,


What is meta stage?

0 Answers  


Categories