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Question
what are Lookup caches options? Including persistent caches.
 Question Submitted By :: ETL
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
There are two types of Lookup Cache options -

1. Dynamic cache.
2. Persistent cache

1. dynamic Cache - The Dynamic cache is a property of the
look up which if selected makes other ports of the same
record to be checked as Look up apart from the Look up port.

2. Persistent Cache - persistent cache is something like on
the first run the lookup table values gets into a cache and
is stored on the server's hard disk. Each time the run is
made the values would be looked up from this cache only.

Persistent cache is done only when the lookup has to be
made on same set of values each time.
 
Is This Answer Correct ?    2 Yes 1 No
Abhishek.x.upadhyay
 

 
 
 
Other ETL Interview Questions
 
  Question Asked @ Answers
 
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.   5
we hava more than 1000 records. i have to select first 5 record, last 5 record and 5 records from middle of the source. how can i do in oracle as well as in informetica??   4
what is the difference between normal & bulk loading? and which one is recommended ? why?   2
Eliminating of duplicate records without using dynamic lookups   1
Hi, Lookup() is what kind of join ? Satyam 5
How to Check the source record count from traget table. IBM 5
can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.   2
Can anyone please send me the latest informatica dumps (power center 8.1.1) for all the three exams? My mail id is yokilamai@gmail.com   1
how to connect to a flatfile through ftp in informatica TCS 1
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 iGate 2
what is the difference between OLTP database and data warehousing database?   2
can Informatica be used as a cleansing tool? If yes, give examples of transformations that can implement a data cleansing routine.   1
 
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