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Data Warehouse Interview Questions
Questions Answers Views Company eMail

How will you load you daily/monthly jobs datas in to Fact and Dimension table using datastage.

CTS,

3474

If i havee 3records in my source having same deptno like Deptid Deptno ------ ------ 101 10 201 10 301 10 and i am using router TR to loading these records into target.Then how many record'll be loaded into target???

Wipro,

5 11654

if reading an external file to produce an external file, what is the shortcut to write that record without coding every single variable on the record

HSBC,

4 10091

What is difference between 8.1 , 8.5 and 9.1 ?

IBM,

1 16179

Hi All, I have three question. 1) How to remove the header and footer in a flat file in informatica? 2)How to load the first and last record of flat file into the target? 3)I have a Input and Output table. Input Name Salaray Month A 100 Jan A 200 Feb A 300 March B 400 April B 500 May B 600 June Output Name Salaray Month A 100 Jan A 300 Feb A 600 March B 400 April B 900 May B 1500 June How to implement and get the ouput as mentioned above. If Possible kindly provide the SQL query also. Kindly any one help to implement this concept. Thanks, Pradeep

CSC, iNautix,

3 18471

Hi all, i have a requirement in Conditional drill through. I have a list report with Cities India, UK, USA, China, japan, Canada.... In the above cities i want to give Hyperlinks(Drill) for Only India & UK. Could you please send me the steps????

1 5438

Hi all, I have a list report with Country, City & Revenue. In the run time i want to hide the particular column. I have tried using Java script but i didn't get any out comes. Please any one share steps for me....

2 6159

How can we read latest records in a text file named file1.txt using seq file stage only? file1 having 100 records in that 5 record sare latest records.How can we read that latest records?

Caterpillar,

3 11803

delete data from staging table as it loads to target table.here is the case we are getting data from 3 different server.a b and c.the data from server A loaded into staging table and we ran the task and data loaded to target table.now today data from server B and C also got loaded to the staging table.now what techniques and what transformations should be used to delete only the data which has been loaded only to the target.we need to delete only that data from staging which has been loaded into the target.looking for your responses

Motorola,

2 6267

Why joiner transformation does not allow the aggregator transformation and expression transformation to join

2 10127

What is the Difference between Change capture stage and Difference Stage ? What are its significance individually ?

1 21557

how to do aggregation (year wise quantity ) using only source qualifier, the source is sql server date as datetime data type and target as flat file with year (string datatype)

Thomson,

2709

IF Sorce table contains CLOB as its one data type then i get error at the target table. How can this be resolve?

2 6586

I have one source table and three target tables. When the session runs for the first time involving the mapping,i want that the loading should take place in 1st Target table only. The 2nd time the same session runs the loading should take place in 2nd Target only only and similarly when the session runs for the 3rd time loading should take place in Third only. And again when the session runs for the 4th time loading should take place in 1st Target table.

Cap Gemini, IBM,

4 13352

what is set mapping in datastage??

ADP,

2 11214


Un-Answered Questions { Data Warehouse }

Briefly define a session task?

1150


Is it possible for different nodes of a microstrategy intelligence server cluster to run against different metadata repositories?

929


What are the data marts?

988


What are templates in which way it is help full?

1007


Explain the importance of surrogate key in data warehousing?

1203


hi friends ... i have insurance project(informatica),can you please tell me how many table and mappings we need to use?and explain me.. thank you

9843


Describe a data warehouse.

996


What are the different clients of powercenter?

1079


How do you create surrogate key using ab initio?

1005


Suppose we want to display zero when null values coming to report how can we do that?

938


What are orabulk and bcp stages?

1139


What would be the value of month at the end of data step execution and how many observations would be there?

1175


How do you define data block size?

1060


Differences between version 7.x and 8.x.

1908


How much data hold in one universe.

1004