what is mapping optimization? wat are the techniques for tat
Answers were Sorted based on User's Feedback
*Use sorted input in Aggretator transformation to decrease
the use of aggregate caches.If you use a Filter
transformation in the mapping, place the transformation
before the Aggregator transformation to reduce unnecessary
aggregation.
* We can use the Source Qualifier transformation to filter
as an alternate way to filter rows.
* Perform joins in a database when possible rather using a
joiner transform
*Adding an index to the columns used in a lookup condition
if you have privileges to modify the database containing a
lookup tables.
these are some simple techniques
Is This Answer Correct ? | 4 Yes | 0 No |
Answer / madhava
To increase the running performance on mapping level.
Techniques of mapping optimization has follow:
1). If its having Filter TX on your mapping place it on
close to the SourceQualifier TX.
2). If in case you are having two or more same DB sources,
use the SQL Override and join it(Instead of Joiner).
3). Use the cache on lookup, Joiner, Aggregator TX. ; etc..
Is This Answer Correct ? | 3 Yes | 1 No |
Hi Everybody, I have one fixed width file as source and 4 oracle tables (relational) as target. What are the Unit test cases i need to implement ? 1.Using TextPad software i tested postion of the field 2.As per specification i tested like whether it is correctly mapped or not? Is there any other test case do i need to implement. If possible can any one give me the test cases Advance Thanks
what is dynamic cashe
Performance wise which is better joiner or look up ? Give me with example?
What are the methods for creating reusable transforamtions?
can we create index and drop index in exsisting table while using infomatica
What is meant by lookup transformation? Explain the types of lookup transformation?
How to generate sequence numbers without using the sequence generator transformation?
i did MBA in 2008. i got job as a Software Engineer(Informatica) in 2008 February in our college campus interviews through consultancy. my problem is when iam going interview HR people ask " YOu are MBA graduate how u get software(informatica) job". iam saying i got job in campus interviews. i have knowledge in informatica in dataware housing. is this answer correct or not. plese give me guidence
What are the types of lookup caches?
10 Answers Accenture, IBM, Informatica,
How can i catch the Duplicate Rows From SorterTrans in a Seperate Target Table ?
how did u understand business requirement?
Global and Local shortcuts. Advantages.