Interested to Buy Any Domain ? << Click Here >> for more details...
can we use sequential file as a lookup
- 7 Answers
- 24372 Views
- Cognizant, Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / satya
U can't use Sequential file as Lookup file because
Sequential file don't have any key columns so we might get
duplicate records from lookup.
Don't use Sequential file as Lookup.
| Is This Answer Correct ? | 7 Yes | 7 No |
Answer / chakravarthy kanishka
Look doesnt requires common key coloumn, then why we need key,
if we go for sequential file as a look up, and squential file have huge data,then it hits the performance,again you need to apply the performance techniques to the sequential file while reading the data,so better to avoid sequential file as a reference to look up.
its my guess...
please let me know if wrong.
thanks
kanishka
| Is This Answer Correct ? | 4 Yes | 4 No |
Answer / kiran
hai..,Tell which situation u want.(Define column names and
data.)
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / raja sekhar
Can not use sequential file as lookup because the sequential fine cannot have any key columns.and also it can not support any reference links.the lookup performs based on the key column.
| Is This Answer Correct ? | 6 Yes | 7 No |
How to initialize environment variables?
What is the difference between lookup and sparse lookup?
whom do you report?
What are the prerequisites for join stage
HOW U CAN ABORT THE JOB IF THE DATA IS DUPLICATE?
What are the main features of datastage?
How can we run same job in 1 day 2 times
If we take 2 tables(like emp and dept),we use join stage and how to improve the performance?
How rejected rows are managed in datastage?
What are system variables and sequencers in datastage
Can anyone tell me a difficult situation who have handled while creating Datastage jobs?
How can we run same job in 1 day 2 times
Teradata 
