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Explain the use lookup tables and Aggregate tables?
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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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what is the indicator file and where it is used?
How can we use external procedural logic in informatica?
tell me few points when u become TL
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CAN ANY ONE SEND ME THE CODE FOR THE BELOW 1).REMOVE '_' FROM TELE PHONE "323-237-2323" AND SHOULD DISPLAY OUT PUT AS "323237232" 2). NEED TO ONLY "COMPANY.COM" FROM EMAIL FILED "TEST@COMPANY.COM"
What is a mapping?
What is Relational Integrity?
Do we need an ETL tool? When do we go for the tools in the market?
Is hadoop a etl tool?
Teradata 
