performance wise which one is better in joiner and lookup transformation?why?explain clearly?
Answers were Sorted based on User's Feedback
Answer / krishna
joiner is best because we will make less number of records or dublicate records as master. integration servic create cahce for master table. becaue of that cahce size is small and secarching oricess become easy. in case of lookup its should scane om botom to end it will take more time.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / basha
based on the situation if we need to cache concept we will
use lkp tr ,we doesnot need to caches we use joiner tr
performence wise joiner is better
| Is This Answer Correct ? | 1 Yes | 5 No |
Answer / rampriya
Joiner is faster than lookup. Joiner will fetch the data
only once form the database, but the lookup will fetch the
data for each record from the database. So performance wise
joiner is better than lookup.
| Is This Answer Correct ? | 4 Yes | 13 No |
I want expect first and last record remaining all records will be loaded into target? which transformations we can use?
What do you understand by SOA of Informatica?
Suppose we have a source qualifier transformation that populates two target tables. How do you ensure tgt2 is loaded after tgt1?
What are your source in project and how you import in informatica? How can i explain abt this?
1 Answers Accenture, Unisoft Infotech,
explain abt joiner t/r?
Using Connected or unconnected lookup for performance wise which one is preferable?.
Can we have a Mapping without a Source Qualifier?
-Which expression we can not use in Maplets?, -Can we join(relate) two dimensions in a schema? -Why and where we use 'sorted input' option?
How many transformations can be used in mapplets.
How identifying bottlenecks in various components of informatica and resolving them?
what type of transformation is not supported by mapplets?
In mapping f.f as one src and f.f as trg,f.f as src and oracle as trg which is fast? mean which is complete first process