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Data Warehouse Interview Questions
Questions Answers Views Company eMail

Give one example for each of conditional aggregation, non-aggregate expression, and nested aggregation?

 1275

How can we update a record in the target table without using update strategy?

 1159

What are the advantages of informatica?

 1021

Describe the impact of several join conditions and join order in a joiner transformation?

 1068

What is persistent lookup cache?

 1039

Suppose we have two source qualifier transformations sq1 and sq2 connected to target tables tgt1 and tgt2 respectively. How do you ensure tgt2 is loaded after tgt1?

 1265

What are the uses of etl tools?

 1136

What are pre and post-session shell commands?

 1325

How does the aggregator transformation handle null values?

 1155

What are the performance considerations when working with aggregator transformation?

 1160

When do you use sql override in a lookup transformation?

 1108

How does a sorter cache works?

 1079

State the differences between sql override and lookup override?

 1221

Name the different lookup cache(s)?

 1241

How many input parameters can exist in an unconnected lookup?

 1562

Un-Answered Questions { Data Warehouse }

How can we create a dynamic column name in cognos?

965

What is meant by drill down?

987

in reporting we add some new objects,how we get the count of the newly added objects to the report

2204

Explain when we use aggregate awareness function in designer?

1041

Explain piconet?

970

What is dimensional table? Explain the different dimensions.

1178

I installed AbInito in my PC.In components there is no "select" component.How can i get that component?and How we can create user defined components?

2066

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

1090

Explain and tell me about a situation where your analysis of a problem was deemed to be incorrect? What would you have done differently?

1280

what is PhaseIII, ODS, TLG, Macro and Proc in SAS

4534

How can we handle two sessions in informatica?

1043

What are the steps involved in etl process?

1044

how does rules tracer help us?

5

What is a hash cluster?

992

what is degenerate key in oracle ?whare do we use it?

2572

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