Answer / suresh

primary-key:-
It represents one or more fields or attributes that uniquely identified each record in a database table.

surrogate-key:-It is a single part,artificially established identifier an entity,surrogate key assignment is a special case of derived data-one where the primary is derived.A common way that surrogate key values is to assign integer values sequentially.

what is dynamic cashe

3 Answers   Informatica,

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What is surrogate key?

9 Answers  

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Suppose we have a (assume relational) source table Product_Id Month Sales 1 Jan x 1 Feb x . . . . . . 1 Dec x 2 Jan x 2 Feb x . . . . . . 2 Dec x 3 Jan x 3 Feb x . . . . . . 3 Dec x . . . . . . and so on. Assume that there could be any number of product keys and for each product key the sales figures (denoted by 'x' are stored for each of the 12 months from Jan to Dec). So we want the result in the target table in the following form. Product_id Jan Feb March.. Dec 1 x x x x 2 x x x x 3 x x x x . . So how will you design the ETL mapping for this case , explain in temrs of transformations.

5 Answers   Accenture, VAMA,

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I have source like this year account month amount ----- --------- ------ -------- 1999 salaries jan 9600 1999 salaries feb 2000 1999 salaries mar 2500 2001 benfits jan 3000 2001 benfits feb 3500 2001 benfits mar 4000 -->i need target like this year account month1 month2 month3 ----- --------- -------- -------- -------- 1999 salaries 9600 2000 2500 2001 benfits 3000 3500 4000

4 Answers   HCL,

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How to write a procedure for a date which is in three different formats,and you want to load into datawarehouse in any single date formate

2 Answers   AHM,

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What is A cache?

2 Answers  

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Hi Every One When i Start the Workflow, Table is Going to be Stored in the target database But the columns are not going to the target database table in my PC , please give me the solution and waiting for solution

2 Answers  

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how do u fnd the duplicate rows and how to delete the duplicate rows?

2 Answers   IBM,

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What do you mean by filter transformation?

0 Answers  

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Differences between connected and unconnected lookup?

0 Answers  

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Define enterprise data warehousing?

0 Answers  

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how will u load the data to diminision tables and fact tables,what is the hiraraichy why we are using hirarichy

2 Answers   TCS,

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