Answer / aparna kanduri

File set can be stored on multiple Unix files as flat files.
file set contains discriptor file and individual raw data
files . No. of raw data files depends on configuration file.

There will be some limit like 2G limit on some file
systems . we can distribute data over nodes to prevent
overrun.
In such cases file set will be useful than sequential file.

Answer / san

Seq. stage:
--------------
Seq file stage by default run in sqe. mode and you define a
seq file stage to run in parallel mode.. by setting option
"number of readers per node" > 1.

Seq. FS is used to read or write data from .txt .dat format
files. But the limit of seq stage is 2 GB.


Fileset stage:
---------------

by default Fileset stage run in parallel mode. more than 2GB
data can be stored. But the fileset hold to typse of information

i) files descriptor -> points to metadata, data location
ii) contains the data, contains multiple files if your using
more than one nodes config file

Answer / venugopal [patni]

Sequential file is used to read the data sequentially.
It can be configured to execute both in parallel and
sequential mode.We cann't perform lookups using sequential
file.
Fileset stage is used to import the exported files list.
It executes only in parallel mode.
the most importance of it is 2G.B limit on the size of a
file and we need to distribute files among the nodes to
prevent overruns.

What is ibm datastage?

0 Answers  

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how can i get 2nd highest salary in datastage?can u send me ,thanQ 2)if i had source has 2 records 1st record ie 1st column contains 1,2,3 and 2nd coulmn contains 10,10,10 i have to get target as 2nd columns as 20,30,40 how can i?

3 Answers   Accenture,

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i have source like deptno,sal 1,2000 2,3000 3,4000 1,2300 4,5000 5,1100 i want target like target1 deptno,sal 1,2000 3,4000 4,5000 target2 2,3000 1,2300 5,1100 with out using transformerstage

6 Answers  

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Sequential file i have one record,i want 100 records in target?How can we do that?Pls explain me and what stages are there?What logic?

1 Answers   TCS,

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Explain how a source file is populated?

0 Answers  

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1)what is the size of Fact table and dimension table? 2)how to find the size of Fact table and dimension table? 3)how to implement the surrogate key in transform stage? 4)write the configuration file path? 5)how many types of datasets explain? 6)diff b/w developed projects and migration projects? 7)how to delete the header and footer file of the sequencer file? 8)how can u call the parameters in DS in unix environment? 9) how much data ur getting daily ? 10)

0 Answers   Polaris,

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Hi guys, 7. how to get this output i/p col1,col2 101,a 102,b 103,c 104,d o/p col1,col2 101,d 102,c 103,b 104,a Thanks

2 Answers   Cap Gemini, IBM,

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Describe stream connector?

0 Answers  

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col1 123 abc 234 def jkl 768 opq 567 789 but i want two targetss target1 contains only numeric values and target2 contains only alphabet values like trg1 123 234 768 567 789 trg2 abc def jkl opq

9 Answers   Patni,

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there are two schemas x and y are there. some data is in x schema. i want to use that in y schema..how can i use? please give some possibilities

2 Answers   Wipro,

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What is Horizontal transformation, vertical transformation,diagonal transformation?

2 Answers   Cap Gemini,

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How to write a expression to display the first letter in Caps in each word using transformer stage ? Please let me know ASAP Thanks in advance...

0 Answers   Alpharithm Technologies,

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