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  Question  Asked @ Answers Views     select
 
suppose data are coming from different locations and those data will not change . is there any need to use surrogate key ? Oracle  3  2071
what is the difference between aggregate table and fact table ? how do you load these two tables ? Target  9  4057
Where can one get more info about Data Warehousing? TCS  2  3304
What Oracle features can be used to optimize my Warehouse system?  1  1532
How can Oracle Materialized Views be used to speed up data warehouse queries?  3  2516
What is the difference between Oracle Express and Oracle Discoverer?  1  675
When should you use a STAR and when a SNOW-FLAKE schema? Accenture  5  4572
What is a star schema? Why does one design this way?  2  2532
When should one use an MD-database (multi-dimensional database) and not a relational one?  1  1747
What Oracle tools can be used to design and build a W/H?  1  1022
What is the difference between an ODS and a W/H?  1  1866
What is the difference between OLAP, ROLAP, MOLAP and HOLAP?  2  3211
What is the difference between a W/H and an OLTP application?  4  1726
What is the difference between a data warehouse and a data mart?  7  2989
What is a ETL/ How does Oracle support the ETL process?  0  65
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Un-Answered Questions
 
 Question Views Asked at   Select
 
What is DTM session? 55  
How did you plan your Data ware house project? 42 TCS
Can decision tree be implemented using SQL? 70  
Theare is a Database In analysis services,How we will specify the fact table.(i.e whether we will create the measure objects for the fact tbl.) or it will reside insde the database. 25 SingleTusk
What are different stages of ?Data mining?? 49  
Explain Association algorithm in Data mining? 50  
for data loading in oracle, what are conventional loading , what are conventional loading and direct-path loading? 27  
What is Cognos script editor? 88  
How are models actually derived? 42  
What is power play plug in? 73  
What is multi-dimensional analysis? 56 Satyam
What is Discrete and Continuous data in Data mining world? 49  
if you use oracle sql*loader , how do you transform data with it during loading? 28  
what is parallel query? 27  
What are the primary ways to store data in OLAP? 46  
Difference between PowerPlay transformer and power play reports? 72  
what are the other factors of the database on which the loading performance depend? 24  
What is difference between Mapplet and reusable transformation? 77  
how can one transfer LOB and user defined data from oracle to warehouse using ETL informaticabecause 58 iGate
Explain grouped cross tab? 75  
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