Answer / venkat

In the aboue two (snow flake,star)schemas ,star schema is
best,because star schema is denormalised and star schema is
centrally located Fact table and surrounded by multiple
dimention tables.so fact table size can be calculated based
on the lowest level granularity of the dimentions.

Answer / koti

star schema is for simple data marts where as snowflake
schema for complexives...

Answer / senthil

hi
normally people using star schema in data warehousing
because it is de_normalized and easy way to retrieve data
from target and also understanding..
But snow flake is in fully normalized.normally OLTP
we use normalized ..

star schema used in data warehousing ..

Answer / radhakrishnansk

star schema is used for easy retrieval.
It is in 2nd normal form.
But snow flake is in 3rd normal form it needs more joins for
retrieval.

what is difference between dimention table and fact table?

1 Answers  

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Differentiate between joiner and lookup transformation?

0 Answers  

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Scenario is like this: Name Sal A 10; B 20; C 30; Then Output should be Name Sal A 10; B 20; C 30; Total 60; Use SQL For this scenario

4 Answers   TCS, Wipro,

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in which situations do u go for scds ?

3 Answers   TCS,

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EXL informatica Questions

0 Answers  

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Can anyone give some input on "Additional Concurrent Pipelines for Lookup Cache Creation" ? I know that this property is used to build caches in a mapping concurently. But which values should I set into this ( i.e. 1 or 2 or 3 or something else ) for concurrent cache building ?

1 Answers   Wipro,

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Hi , Please help how to achieve the following scenario. I have a source table like this. Rollno name class university 1 Raj 1st Sku 2 Ram 2nd SVU 3 Sam 3rd OU I need the data in the target table like below. Rollno name class university 1 Raj 1st Sku 2 Ram 2nd SVU 3 Sam 3rd OU 4 Rajesh 5th SKU The Last row values we have.. and we have to append this last row in the target table. Thanks and Regards Nataraj V

3 Answers   NTT Data,

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Limitation of REPLACESTR. Is there any character limitation to it.

1 Answers   CTS,

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. Design a mapping, first two phone calls received by a customer must be represented as "Home" , "Office" and the next calls must be concatinated and represented as "Other".Look at the below tables :: Source Definition Customer Phone_Number A 9848403211 A 9812675432 A 9112356788 A 9876503276 B 9567890765 B 9876098567 AND THE TARGET IS Customer Home Office Other A 9848403211 9812675432 9112356788,9876503276 B 9567890765 9876098567 Null

3 Answers  

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Input flatfile1 has 5 columns, faltfile2 has 3 columns(no common column) output should contain merged data(8 columns) Please let me know how to achieve ??

3 Answers   IBM,

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In seqence generator transformation maximum limit is reached,after reaching maximum limit how will u insert the data

2 Answers   HCL, Schneider,

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why we are using surogate key in real time give me explanation

2 Answers   TCS,

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