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1. if lookup tr is giving poor performamence. what u do.
2. i have emp,dept table. i want output
ename,empno,dname,max(sal).
3. can any one tell me project flow in real time scenario.
please send me mail any queries and answers
my mail id is yaparala@gmail.com
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Answer / reddy guru
According to my knowledge write a query inlookup query
override or increase the cache size
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / sandhya
Hi,
i dont know wether this is write or wrong .but in my way in look up we r having 2 modes cache &noncachemode noncache mode is low performance than the cachemode .bcz look up will maintains the connection with lookup table until comparision is completed.in cache mode lookup table data loaded into memory &dis connected from the lookup table this gives high performance
by using joins we can get the results as of my knowledge
| Is This Answer Correct ? | 0 Yes | 4 No |
Hi please try to reply with answer. my mail id is raghu.1028@gmail.com. if the source is having millions of records, but having theree target tables. As per user the first record need to insert into first target and second record in to a second target and third into third target, similarly the process needs to repeat?
1.Identify and discuss the problems which are occurred during data quality verification for the single-source and multi-source problems. 2.Testing has very important role in DWH. In ETL testing phase, how can we perform the integration testing and regression testing? 3.What are the perquisites of system testing and regression testing in ETL phase?
What is tracing level? How many types of transformations supported by sorted input?
what is Forward,Reverse and Re_engineering?
what is data modeling?
how do u set partition points in the mapping?
What are three tier systems in etl?
How many steps etl contains explain with example?
how many maximum session supports to multiload in teradata ??
What are the modules in Power Mart?
where we cannot use sorter Transformation. if we use then we will not get correct data?
if u can't find what you are looking for in lookup table, how do you handle?
Teradata 
