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Data Warehousing Interview Questions


Data Warehousing Interview Questions

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 Data Warehousing Interview Questions
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What are the different tracing options available? Can tracing options be set for individual transformations? 
View Question | Asked by : Muthu3180

Explain multidimensional data models and how they are integrated with the architecture you have already designed 
View Question | Asked by : yonasbeyene

View Question | Asked by : mallika_dl

Latest Answer: Aggregate tables are pre-computed totals in the form of hierarchical mutidimensional structure.,whereas materliazed view ,is an database object which caches the query result in a concrete table and updates it from the original database table ...
Read Answers (1) | Asked by : madhu2732

“A dimension table is wide but the fact table is deep” Explain the statement in your own words.
Read Answers (4) | Asked by : Saba

View Question | Asked by : kishore

Latest Answer: Data profiling is a way to find out what is the profile of the information contained in the source. e.g. In a table a column may be defined as alphanumeric. However majority of the data may be numeric. Profiling tools will provide the statistical information ...
Read Answers (1) | Asked by : hanu

Latest Answer: The basic advantage of RAID is to speed up the data reading from permanent storage device (hard disk). Cheers,Ravi Kumar Garre ...
Read Answers (1) | Asked by : keerthi

What is the difference between mapping parameter & mapping variable in data warehousing?What are the types of variable available in data warehousing?
Read Answers (3) | Asked by : vikram

Latest Answer: Surrogate keys are the system generated keys and used to eliminate the redundancy in the primary keys. So they are always integer numbers. ...
Read Answers (5) | Asked by : pepsi

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