Answer / ashis

When we use dynamic lookup the process is as follows:
1. When the first record is read from the lookup
table/flatfile, server keeps the value in the RAM also the
same information is written into two auto generated files
(having random names, forgot the type, hope it is something
related to index and cache).
2. When the next record comes for lookup, first the record
is searched in the RAM or created file based on the
conditions used in lookup condition.
3. If not found then searched in the Lookup table.
4. In case of dynamic lookup once value is fetched from the
source with modified fields it will be updated in the RAM
or autogenerated file for further lookup for same key
values, before the completion of the session.
(Example:- in case if emp_id 101 got modified more than one
time between the two runs).

5. In case of static lookup. It will always look into the
already existing value in the lookup table.

Answer / padmavathi

What Ashis told is Exactly correct apart of this Actually
when lookup table contains less data then we will go for
the Dynamic Lookup cache, performance increases.If large
data is there means its better to go for static cache.

Is there any model difference between ODS and DWH

2 Answers   Zensar,

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Source having one lakh record and loaded into target. Then, how can i compare records will loaded in table? For example Source having Firstname,Lastname. the same Firstname,Lastname record will be loaded into Target? How can i check in Oracle?

5 Answers  

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How can we eliminate duplicate rows from flatfile,explain?

3 Answers  

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Let’s say I have more than have record in source table and I have 3 destination table A,B,C. I have to insert first 1 to 10 records in A then 11 to 20 in B and 21 to 30 in C. Then again from 31 to 40 in A, 41 to 50 in B and 51 to 60 in C……So on up to last record.

5 Answers  

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how can we update without using update transformation. wt is push down operation in informatica. which lookup gives more tuning performance. if so why.

6 Answers   CTS, Symphony,

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If the source has duplicate records as id and name columns, values: 1 a, 1 b, 1 c, 2 a, 2 b,the target shd be loaded as 1 a+b+c or 1 a||b||c, what transformations shd be used for this?

3 Answers   CTS, Wipro,

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What if i will group by with some port in aggregator and will not pass the sorted values. Will the session fails tell in both cases ( if i have configured it for sorted input and if i have not configured it for sorted input).

1 Answers   CTS,

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Define filter transformation?

0 Answers  

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following source name gender ramya female ram male deesha female david male kumar male i want the target male female ram ramya david deesha kumar any body give solution above question?

8 Answers   BRAD, TCS,

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when we use lookup,if have 5 records,if i dont need 1st and 2nd records..what will be the procedure to achieve by using lookup?/

5 Answers   L&T,

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 Suppose you have n no.of records @ your flat file and you have seen some of records are missing while reaching to the destination. How can you trouble shoot it?

2 Answers   DELL,

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Tell me how many tables used in Ur project and how many fact tables and dimension tables used in ur project

2 Answers   iGate, Qualcomm,

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