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Data Warehouse General Interview Questions
Questions Answers Views Company eMail

What is an error log table in informatica occurs and how to maintain it in mapping?

965

What is static and local variable?

1035

What is the main difference between schema in rdbms and schemas in datawarehouse?

1093

What is surrogate key? Where we use it explain with example?

931

Explain can a dimension table contains numeric values?

967

What is crass reference table?

1054

What is a fact, dimension, measure?

1208

Explain difference between e-r modeling and dimentional modeling?

987

Explain the definition of normalized and denormalized view and what are the differences between them?

925

Explain the definition of normalized and denormalized view?

903

Explain why fact table is in normal form?

970

What are situations where snow flake schema is better than star schema to use and when the opposite is true?

996

Explain dimensional modelling?

984

What is batch processing?

1032

What is aggregate fact table?

991


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Un-Answered Questions { Data Warehouse General }

Which component has onread method and what it is used for?

984


Explain clearly how to explain any (sales) project in interview. Actually feom where report developer work starts?pls reply as soon as possible?

970


How to provide security in frame work manager for a query subject?

961


Explain the process of extracting data from source systems,storing in ods and how data modeling is done?

927


What is application.cfm?

1050


Explain if a flat file cotains 1000 records how can I get first and last records only?

931


What are non-additive facts in detail?

995


What are the advantages of raid 1, 1/0, and 5. What type of raid setup would you put your tx logs?

949


Difference between cold fusion mx 6 and cold fusion mx 7?

842


What are the different types of join operations?

1002


Explain what is cost benefit analysis (cba)?

974


How can we run the graph? How can we schedule the graph in unix?

954


Explain bus schema?

974


What is drill-through?

988


Hyperion is the one of the tool in data ware house. Its an olap tool. Why you cant display that tool?

1020