Data Warehouse Interview Questions
Questions Answers Views Company eMail

What is lookup table in etl testing?

726

for example You have One Table with 4 Columns (Mgr ID, Department ID, Salary, Employee ID). Can you find out the Average Salary and Number of Employee present per Department and Mgr

760

what is stage is used for below Input columns: dept|mgr|employee|salary Output columns: mgr|count of employee per mgr|avg salary per dept note: each dept has one mgr and each mgr has many employees

653

What is the maximum and minimum length of macro variable

640

Looking for IBM COGNOS Certification C1000-065 , C2020-605 , C2090-621 , C2090-623 Dumps?

633

Can someone tell me the behaviour of next_in_sequence() and innovation_number() in a multifile. Suppose I have records 1,1,1,2,2,3,4,4 in a 4ways mfs file. Data in each partition is: 0th : 1,1,1 1st : 2,2 3rd : 3 4th : 4,4 What will be the sequence of these records if I pass next_in_sequence() and innovation_number() ? Also how can I extract 3rd record from each of the 4 partitions of a 4way multifile through AbInitio? In unix we can use m_dump

1 2881

Can some tell me at which level pdl gets resolved when parameters are resolved in abinitio? Also what happens in dml evaluation during parameter evaluation ?

754

Whenever we load data into oracle table from staging table using exchange partition...then I read somewhere that data actually doesn't move in this and this command only reset the pointer in the data dictionary...so if data doesn't move then how data is loaded into the main table ? I mean wat is the point of pointer update in data dictionary?

555

What is the return type of lookup_not_loaded() ? Does it return 0 or 1 to signify true or false or does it return index ...can someone please explain.

849

How can we increase the loading performance of oracle table in AbInitio?

622

What happens when we provide null key to sort, merge and pbks in Abinitio ?

807

Input Data: AAABBBCC CCAAABB expected output A3B3C2 A3B2C2 How can I achieve this in Ab initio? where In output count of occurrences should be sorted from high to low

847

Input A 100 NUll A NUll 200 B 100 Null B Null 300 Output A 100 200 B 100 300 Do this using Ab initio

962

I/p : F1 table have A,B,C,D,E and F2 table having C,E,V i need output 0utput1: ABD output2: V any one suggest me this

537

IN SCD1, insource we have 10 billion records and in the first day its uploaded successfully and in the second day its taking time to upload because some records it might get update or insert new records. As a developer what will be the better solution for this??

549


Un-Answered Questions { Data Warehouse }

Explain what are the modules in power mart?

555


1.WHAT IS XML SPECIFICATION WHAT IS PURPOSE,WHERE YOU ARE GOING TO USE.2 DIFFERENCE BETWEEN RENDER VARIABLE AND CONDITIONAL BLOCK.3.WHAT IS LINK AND SEGMENT.4.WHAT IS CONDITIONAL LAYOUT.5. DIFFERENCE BETWEEN DETAIL FILTER AND SUMMERY FILTER AND HOW YOU ARE GOING DEFINE IN SQL (DETAIL AND SUMMARY FILTER ).. WELL THESE QUESTION I BEEN FACED IN IBM COULD SOMEBODY GET SOLUTIONS PLZ..THANKS IN ADVANCE

1681


What is is a data flow graph?

657


What is difference between page break and section report? What is main advantage datawarehousing over oracle?

594


Explain meta data?

538






Give some difference between oltp and olap.

585


What are the batches and it’s details?

553


Suppose a null dataset with 10 variables; I want to print only name of the varibales in log window and also output window. How can we do this one?

492


how can you get the errors in job? when loops are araised we get error?

1641


What is sort component in abinitio?

689


What are stage variables, derivations and constants?

654


what is the main role of FI on business

1617


What is the basic structure of a sas program?

581


can any one explain about dataflow in the informatica project for bank domain....thanks is advance

10264


What is a dimension?

620