Explain the importance of surrogate key in data warehousing?
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why we use hash file for lookup?
How to generate surrogate key without using surrogate key stage?
This is UNIX question asked in DataStage Interview. Say I have n numbers of records in a text file. I want first 3 records in 1st file, last three records in 3rd file and remaining n-6 records in 2nd file. (Note: we don't know how many records are there in the File. I am getting one file on daily basis and I want three target files as asked above)
What is configuration your file structure 2)I have two databases both are Oracle while loading data from source to target the job takes 30 min but I want to load less time how?
Why do you need stage variables?
What is job control?
Emp login_timestamp Logout_timestamp A,2019-02-01 02:24:15,2019-02-01 04:59:42 B,2019-03-29 14:43:30,2019-03-29 20:22:00 ABC,2019-03-29 12:43:00,2019-03-29 23:22:59 In the above calculate the duration of hours spent in office for each emp in datastage.
HOw Hash Partion Works Thank you in Advance i have doubts on Hash Partion TEch Could please give me the clear understandable notation example e_id,dept_no 1,10 2,10 3,20 4,20 5,30 6,40 i have TWo Nodes/Three Nodes My questions are: 1).if i select hash key as e_id how Hash partion will distribute the data in to two NOdes/three NOdes 2).if i select hash key as dept_no how Hash partion will distribute the data in to two NOdes/three NOdes sivakumar.katta7@gmail.com
What is a datastage job?
3) Sequential file contains data like Empno ename sal 111 abc 2000 Trgt file: Trgt1----111 Trgt2----abc Trgt3---2000
wt is the difference between swith and filter stage
what is the definitions for Datawarehose and Datamart?