chandrasekar


{ City } chennai
< Country > india
* Profession *
User No # 72801
Total Questions Posted # 5
Total Answers Posted # 37

Total Answers Posted for My Questions # 12
Total Views for My Questions # 52638

Users Marked my Answers as Correct # 109
Users Marked my Answers as Wrong # 25
Answers / { chandrasekar }

Question { Cap Gemini, 6261 }

what is constraint based load order


Answer

The above answer with add one point we can configure the
constraint based load order in the Session Config obj tab.

Is This Answer Correct ?    1 Yes 0 No

Question { Cap Gemini, 9629 }

what is fact and what types of fact tables is there


Answer

A Fact table contains unique combination of dimensional keys.
Fact tables are normalized.
A Fact tables have the facts at the lowest level of granularity.

Types of Fact table:
There are 3 types .
1)Detailed Fact table
2)Aggregate/Summarize fact table
3)Factless fact table

If it wrong means please send the correct answer to me
chandranmca2007@gmail.com

Is This Answer Correct ?    1 Yes 0 No


Question { Cap Gemini, 5936 }

what is junk dimension


Answer

In a dimension a particular attribute cannot performed by
any key performance indicator. It is called junk dimension.

For example Phone number is a junk dimension.

Is This Answer Correct ?    1 Yes 0 No

Question { TCS, 8451 }

write a query to remove null value follwing table?
col1 col2 col3
dinesh null null
null suresh null
null null prakesh

i want the output

col1 col2 col3
dinesh suresh prakesh


Answer

Hi Srinivas how the sql query execute because the query
returns only max values.. so please clarify.

Is This Answer Correct ?    1 Yes 1 No

Question { TCS, 5116 }

What is joiner cache?


Answer

When we use the joiner transformation an integration service
maintains the cache, all the records are stored in joiner
cache. Joiner cache have 2 types of cache 1.Index cache 2.
Joiner cache.

Index cache stores all the port values which are
participated in the join condition and data cache have
stored all ports which are not participated in the join
condition.

If it wrong means Please mail me chandranmca2007@gmail.com

Is This Answer Correct ?    1 Yes 0 No

Question { CTS, 33964 }

1)how to generate sequnce numbers in informatica without
using sequnce genarator transformation.

2)i have number of records in my sourse, but iwant to
display first and last record only. how it is possible in
informatica.

3)i want to update the records without using updatestrategy
transformation.

4)what is diffrance between ab-intio and datastage than
compared to informatica.

5)what is the latest version of informatica in our field.


Answer

HI VENKATESH,

YOUR ABOVE ANSWER IS NOT CORRECTLY WORKING IN MY
SYSTEM. SO PLEASE EXECUTE THE ABOVE SOLUTION ONCE AGAIN LOAD
IT. AS PER MY KNOWLEDGE WE CAN CREATE A MAPPING VARIABLE AS
$$SEQ,DATA TYPE IS INTEGER AND SELECT AGGREGATION COLOUMN IS
COUNT. USING EXP TRANSFORMATION SETCOUNTVARIABLE($$SEQ). IT
WILL WORK CORRECTLY.

Is This Answer Correct ?    2 Yes 1 No

Question { IBM, 5555 }

what is constraint based loading


Answer

Constraint based load order defines the order of loading the
data into the multiple targets based on primary and foreign
keys constraints.

If i wrong means please send mail to chandranmca2007@gmail.com

Is This Answer Correct ?    6 Yes 1 No

Question { IBM, 8955 }

which transformation should we use to get the 5th rank
member from a table in informatica?can we achieve this in
sql?


Answer

Hi Venkatesh,

The above SQL query is not working correctly..

I have one answer for the above problem. The query is, try
it in the SQL override.

select * from emp where sal=(select max(sal) from emp a
where (select count(sal) from emp b where b.sal >=a.sal)=5)

If it wrong means send the correct answers to me
chandranmca2007@gmail.com

Is This Answer Correct ?    0 Yes 3 No

Question { Emphasis, 8003 }

i have n number of records in my source, i want first and
last record to my target. how can u implement this scenario .


Answer

Please try the SQL query in the SQL override,

select * from emp where rownum=1 union select *
from emp where rowid=(select max(rowid) from
emp);


if it wrong means please mail to me chandranmca2007@gmail.com

Is This Answer Correct ?    8 Yes 3 No

Question { Emphasis, 8003 }

i have n number of records in my source, i want first and
last record to my target. how can u implement this scenario .


Answer

Hi Rakesh,

Please go through the above question because don't sort the
records what have the source as it is to load the records
for first and last.

Is This Answer Correct ?    4 Yes 2 No

Question { Wipro, 5245 }

Can anyone please distinguish what is Inner join and Outer join


Answer

INNER JOIN MEANS, IF THE JOIN CONDITION SATISFIES THEN ONLY
BOTH TABLE RECORDS ARE JOINED OTHERWISE REJECTED.

IF THE JOIN TYPE IS OUTER JOIN MEANS THERE IS JOINED THE
RECORDS WITH MATCHING AND NON MATCHING RECORDS.

if it wrong means please mail me chandranmca2007@gmail.com

Is This Answer Correct ?    3 Yes 0 No

Question { 6071 }

suppose we are using dynamic lookup cache and in lookup
condition the record is succeeded but in target it is failed
due to some reasons then what happened in the cache ?


Answer

IF THE LOOKUP CONDITION IS TRUE THEN THE RECORD IS LOADED IN
CACHE AS WELL AS IN TARGET BUT THE TARGET FAILED MEANS
RECORD ONLY LOADED IN CACHE.

IF IT IS WRONG MEANS PLEASE MAIL ME chandranmca2007@gamil.com

Is This Answer Correct ?    1 Yes 4 No

Question { 10488 }

major difference between normal loading and bulk loading?


Answer

IF WE SELECT THE TARGET LOAD TYPE IS NORMAL, THEN DATA
MOVEMENT IS ROW BY ROW AND STORE AN INSTRUCTIONS IN SESSION
LOG FILE.IF SESSION FAILS, WE CAN RECOVERY THE DATA USING
SESSION RECOVERY AND DATA LOADING IS SLOW. BUT IN BULK TYPE
LOADING DATA IS FAST AND IT DOESN’T MAINTAIN THE SESSION
LOG FILE. IF SESSION FAILS WE CANNOT USE SESSION RECOVERY
IN BULK MODE.

IF I WRONG MEANS PLEASE SEND THE MAIL TO ME
chandranmca2007@gmail.com

Is This Answer Correct ?    15 Yes 0 No

Question { TCS, 7104 }

if i have 10 records in my source,if we use router t/r and given the condition as i>2,i=5 and i<2in the different groups
what is the o/p in the target


Answer

The above scenario I took an one table like emp table, I
took the coloumn as deptno ,I have created 3 targets and
created one router T/r , condition like that one is
deptno>20 , deptno=20 and deptno<30.

In that if the deptno>20 condition satisfies then the
particular record who has deptno above 20 which can be
loaded into one target. The same as other 2 conditions. If
the condition satisfied then it can loaded to particular target.

if it wrong means please mail me chandranmca2007@gmail.com

Is This Answer Correct ?    1 Yes 1 No

Question { 18458 }

CAN WE IMPLEMENT SCD TYPE 1 AND SCD TYPE 2 IN SAME MAPPING?
IF SO HOW?


Answer

We have to take same source for both scd type1 and type 2.
First , we can take the router Transformation and create two
groups one is scd type1 and scd type2. With that source we
can implement the both type1 and type 2. If anybody want the
workflows means please mail me.

My mail id is chandranmca2007@gmail.com

Thanks.

Is This Answer Correct ?    0 Yes 2 No

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