:: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Categories >> Software >> Data Warehouse >> Data Warehouse General


 Teradata interview questions  Teradata Interview Questions (183)
 Business Objects interview questions  Business Objects Interview Questions (751)
 Cognos interview questions  Cognos Interview Questions (842)
 Informatica interview questions  Informatica Interview Questions (1623)
 Crystal Enterprise Suite interview questions  Crystal Enterprise Suite Interview Questions (29)
 Actuate interview questions  Actuate Interview Questions (35)
 Ab Initio interview questions  Ab Initio Interview Questions (168)
 Data Stage interview questions  Data Stage Interview Questions (563)
 SAS interview questions  SAS Interview Questions (551)
 Micro Strategy interview questions  Micro Strategy Interview Questions (36)
 ETL interview questions  ETL Interview Questions (195)
 Data Warehouse General interview questions  Data Warehouse General Interview Questions (215)
Tell me one example for junk dimension?
 Question Submitted By :: Data-Warehouse-General
I also faced this Question!!     Answer Posted By  
# 1
example for junk dimension:

consider a trade company which consists of fact about trading that take places in a share trading these there may be some facts like mode of trade(which indicates whether the user is trading through phone or online)which will be not related to any of the dimensions such as account,date,indices,amount of share etc.
so these unrelated facts are removed from the fact table and stored as a separate dimension as a junk dimension which will be useful to provide extra information
Is This Answer Correct ?    12 Yes 1 No
# 2
Itís simply a structure that provides a convenient place to
store the junk attributes.
Is This Answer Correct ?    10 Yes 6 No
# 3
The dimension which will contain data/flags information is
called junk dimension
Is This Answer Correct ?    5 Yes 1 No
# 4
any yes or no like status is an example for junk dimension 
Is This Answer Correct ?    11 Yes 8 No
# 5
un wanted data which is not useful fo report generating
purpose tht data will be placed in the particular table that
table is known as junk dimension
Is This Answer Correct ?    6 Yes 5 No
# 6
A junk dimension is a table containing all known or given
combinations of two or more other dimensions. It is then
used as a lookup from a fact table to find the combination
of dimensions that relate to that fact. The purpose is to
declutter and reduce the width of the fact table.
An example might be a [SalesFact] table which references a
junk dimension [SalesExtentionDIM] containing values/SKs
for dimensions of [OnSaleYN] , [SaleCodeSK] , [ColourSK] ,
Is This Answer Correct ?    1 Yes 1 No
# 7
Junk Dimension are may be or may not be used
Ex-Gender M/F
student attendance.-yes/No
Is This Answer Correct ?    0 Yes 0 No
# 8
A Dimension with the type of descriptive information like flog,button or not used describe the key performance indicators known as facts is called as junk dimension

ex: product description,phone,fax, address ,etc..
Is This Answer Correct ?    4 Yes 6 No
Srinivas Reddy

Other Data Warehouse General Interview Questions
  Question Asked @ Answers
How to answer the question how many fakt table in your datawarehouse and what size it have? Cap-Gemini 2
Is it possible to have more than one row on the same table with the same foreign key?   2
How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null. IBM 1
If I have table T1 and table T2 T1 has 250 cols and 10,000 rows T2 has 2 billion rows and 10 cols Which one would be Fact table and which one would be Dimension table and why ? Principal-Finance 3
Tell me the Top 10 features of oracle that supports datawarehousing. CTS 2
What is staging area?   9
why oracle is the best database for data warehousing? HCL 4
Advantages of de normalized data?   2
Can we have more than one time dimensions in a Schema(Star or Snowflake) IBM 1
what are different ways of loading data to data warehouse using oracle?   1
Which kind of index is preferred in DWH?   1
What is Factless fact table? In which purpose we are using this in our DWH projects?Plz give me the proper answer. Thanks, Ramesh ACS 6
For more Data Warehouse General Interview Questions Click Here 

Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
Copyright © 2013  All Rights Reserved.   ::