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Question
what is normalization and denormalization
 Question Submitted By :: Data-Stage
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
IN Normalization is controlled by elimination redundant
data where as in Denormalisation is controlled by redundant
data.
 
Is This Answer Correct ?    1 Yes 0 No
Somu
 
Answer
# 2
Normalisation is a Process of decomposing the tables into
number of succesive tables to avoid Data Retundancy and
Inconsistency
 
Is This Answer Correct ?    0 Yes 0 No
Shanu
 
 
 

 
 
 
Other Data Stage Interview Questions
 
  Question Asked @ Answers
 
how many datamarts we will use in real time project and when will use the datamart?pls send the replay early Tech-Mahindra 1
What is APT_DUMP_SCORE? IBM 2
Unix Qn asked in datastage interview: I have diff type(.txt, .tmp, .bat etc) of file in 4 diff directories, I want move all '.txt' file from 4 directories to other folder. And need to delete all the files except which are created TODAY? TCS 2
A table containg 100 records B table containg 20 records we have to join two tables in left outer it containg target 100 records but target containg 101 record at that time what is the issue arise Polaris 1
There are two file are there .1st file contains 5 records and 2nd file contain 10 records in target they want 50 records.how can achieve this IBM 5
How u implement the slowly changing dimensions if my source table is consisting of cid,cname,add,phno,email but i need to capture the changes for first three columns how u implement? IBM 1
HOw Hash Partion Works Thank you in Advance i have doubts on Hash Partion TEch Could please give me the clear understandable notation example e_id,dept_no 1,10 2,10 3,20 4,20 5,30 6,40 i have TWo Nodes/Three Nodes My questions are: 1).if i select hash key as e_id how Hash partion will distribute the data in to two NOdes/three NOdes 2).if i select hash key as dept_no how Hash partion will distribute the data in to two NOdes/three NOdes sivakumar.katta7@gmail.com FIS 5
What are the prerequisites for join stage   2
Tell me the syntax of Configuration file?   1
what is advantages of snowflake when it is used? IBM 3
WHAT ARE PERFORMANACE SETTINGS YOU HAVE IMPLEMENTES IN YOUR PROJECT? GE 2
how can u handle null values in transformer stage.   5
 
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