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

Other Data Stage Interview Questions
  Question Asked @ Answers
data stores in which location while using data set stage as the target? TCS 1 to generate even numbers in surrogate or tranformar stage ? 2. how many ways to remove duplicate values? TCS 5
i have seq file that contents 10 million records load to target any data base.. in that case it takes lot of time for do performance tuning in that situation...? TCS 4
what is the difference between lookup stage reject link and merge stage reject link in datastage Parallel jobs? interm of output in Merge Reject link and Look Up Reject link ? HCL 4
if i have two tables table1 table2 1a 1a,b,c,d 1b 2a,b,c,d,e 1c 1d 2a 2b 2c 2d 2e how can i get data as same as in tables?chandu how can i implement scd typ1 and type2 in both server and in parallel?chandu field1 field2 field3 suresh , 10,324 , 355 , 1234 ram , 23,456 , 450 , 456 balu ,40,346,23 , 275, 5678 how to remove the ,inthe fields?   2
I am having the 2 source files A and B and I want to get the output as, the data which is in file A and which doesn't in file B to a target 1 and which is in file B and which doesn't in file A to a target 2?   2
what about data stage requirement   1
How to remove ctrl M or(^M) characters in file using Sequential File stage? Satyam 2
how do u capture duplicates through sort & transformer   4
what is the difference between the join and look up explin me one exmple   2
Source Like department_no, employee_name ---------------------------- 20, R 10, A 10, D 20, P 10, B 10, C 20, Q 20, S and Output should be like this department_no, employee_list -------------------------------- 10, A 10, A,B 10, A,B,C 10, A,B,C,D 20, A,B,C,D,P 20, A,B,C,D,P,Q 20, A,B,C,D,P,Q,R 20, A,B,C,D,P,Q,R,S   3
plz tell me some dimentional and fact table names in banking project? Virtusa 1
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