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Divya.A
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Post Posted: Thu May 06, 2010 8:52 am Reply with quote    Back to top    

DataStage® Release: 8x
Job Type: TX
OS: Windows
What are functional maps? in which scenarios they are used?
mojave3
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Post Posted: Sun May 09, 2010 3:25 am Reply with quote    Back to top    

Divya.A wrote:
What are functional maps? in which scenarios they are used?


maps are called by execution maps. sometimes , you cannot finish all logic in a map. you can build some common maps which can be reused.
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madhes
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Post Posted: Tue May 25, 2010 12:31 am Reply with quote    Back to top    

Divya.A wrote:
What are functional maps? in which scenarios they are used?


Functional map is subset of executable map.

-> Say for example, in some cases input record is 0:s and output record is 0:s, but you have to map only
certain input records (obviously some satisfying condition) with output recrod, in this case we have to functional map to do the mapping.

-> Generally, wherever looping is required in output to map the input then we have to use f'map to do the mapping.

Best Regards
Madhes

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Madhes
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chvenkat.v
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Post Posted: Thu Jul 01, 2010 2:59 am Reply with quote    Back to top    

When is your interview?

*** Please don't post interview Questations ****

Refer Datastage TX User Guide ...
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jvmerc
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Post Posted: Mon Jul 26, 2010 10:33 pm Reply with quote    Back to top    

chvenkat.v wrote:
When is your interview?

*** Please don't post interview Questations ****

Refer Datastage TX User Guide ...


Sorry, don't quite understand that comment. You must know or see something I missed.

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In addition functional maps can be used perform common routines. Don't bother writing a rule 4 times. Write 1 f_map and execute it 4 times. Make maint easier too.
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roydanlobo
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Post Posted: Wed Sep 22, 2010 8:26 pm Reply with quote    Back to top    

I am pretty sure , you have used a c function
eg: f(x,y)
Same way you use a function in Mercator or WTX with parameters like x and y , this will in-turn act as a sub map to the main map , this is called a functional map.
this has a input and the output , the input is nothing but the parameters u pass in the functional map and output is the location where you write the functional map. it will return a value , Just like another function in any programming languages , takes the parameters as input and returns the value simple ryt???? [/b]
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