Answer / murthy

generally lookup is used to search for a record.in realtime
mainly people use this to fetch the key values doing a
lookup on the other table.

Answer / kaki

Look up transformation is used for looking up a value from
OLAP table within a mapping before populating it. For
example, I have empid and I want to get emp name to use in
the next transformation, I would search for it in a look up
table which has the emp name by giving input as emp id.

what is the meant by Normalization and de-normalization?

0 Answers  

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Eliminating of duplicate records without using dynamic lookups

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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

2 Answers   HCL, iGate,

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IN Informatica, I have 10 records in my source system. I need to load 2 records to target for each run. how to perform.please let me know. I know by using Mapping variable we can perform but how to load please any one explain.

3 Answers   TCS,

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please tell me any easy ways of testing the Data warehouse project. In my project we are not using any tools for ETL. we are writing scripts in SCRIPTELLA. And we using Pentaho tool for Reporting How can i test all these. please tell me ASAP. thanks in adavance

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diff b/w dwh & data mart diff b/w star schema & snow flake schema diff b/w fact table & dimension table what are the contents in requirement specification what are the docs needed for testing draw ur proj architecture

0 Answers   L&T,

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Eliminating of duplicate records without using dynamic lookups

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how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.

2 Answers   CTS,

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how can i text accracy of ETL migration? i am very new to data warehousing. we are writing ETL scripts using SCRIPELLA tool. how can i test the correctness of data. and we are generating reports using pentaho . is there any easy way to test the pentaho. how can test these ETL scripts written in scriptella? thanks in advance

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A mapping contains source table S_Time(stat_year,end_year) target table TIM_DIM(date,day,month,year,quarter) stored procedure transformation: A procedure has two parameters I_end_year and output parameter as O_date ,day , month, year, quarter, If this session is running, how many rows will be available in the target and why?

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What is etl process? How many steps etl contains?

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What is etl process. How many steps etl contains explain with example?

0 Answers  

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