Interested to Buy Any Domain ? << Click Here >> for more details...
wt is Dynamic lookup Transformation?
when we use?how we use?
- 2 Answers
- 25352 Views
- TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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.
| Is This Answer Correct ? | 24 Yes | 6 No |
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 This Answer Correct ? | 20 Yes | 6 No |
tell me about your project functionality
what are presession,postsession success and postsession failure commands ?
WAT IS THE MEANING OF UPGRADTION OF REPOSITORY?
What is DTM process?
Scenario:- Below is the requirement. Source:- NAME ID Requirement RAVI 1 (no need to repeat as it ID is 1) KUMAR 3 (repeat 3 times as it ID is 3) John 4 (repeat 4 times as it ID is 4) Required Out Put:- Name ID RAVI 1 KUMAR 3 KUMAR 3 KUMAR 3 John 4 John 4 John 4 John 4 Scenario 2:- Source Data ID NAME 1,2 NETEZZA,ORACLE 3,4,5 SQL Server, DB2, Teradata Required Output:- ID NAME 1 NETEZZA 1 ORACLE 3 SQL Server 3 DB2 3 Teradata
How is union transformation utilized?
what is lookup ?
What is the fact table?
how will you remove the duplicate records from flat file without using sorter?
What is joiner change?
How do you handle two sessions in Informatica
i have source data like id name sal 1 a 65020 2 b 78250 3 c 58264 but how to get target like this id name sal 1 a Sixty five thousand twenty 2 b Seventy thousand two fify 3 c Fifty eight thousand two sixty four
Teradata 
