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ETL Interview Questions and Answers

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ETL Interview Questions & Answers


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Questions Question: What is governor in cognos framework manager.
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Questions Question: What is fact less fact table? where you have used it in your project?
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Questions Question: What are snapshots? What are materialized views & where do we use them? What is a materialized view lo
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Questions Question: What are the various tools? - Name a few
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Questions Question: Can we lookup a table from source qualifier transformation. ie. unconnected lookup
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Questions Question: What is ODS (operation data source)
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Questions Question: What is the difference between etl tool and olap tools
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Questions Question: What is the metadata extension?
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Questions Question: What are the various test procedures used to check whether the data is loaded in the backend, performance of the mapping, and quality of the data loaded in INFORMATICA.
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Questions Question: I'am new to SAS, can anybody explain the process of extracting data from source systems,storing in ODS and how data modelling is done.
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Questions Question: Where do we use connected and un connected lookups
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Questions Question: Where do we use semi and non additive facts
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Questions Question: What are non-additive facts in detail?
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Questions Question: What is a staging area? Do we need it? What is the purpose of a staging area?
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Questions Question: What is a three tier data warehouse?
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Questions Question: What are the various methods of getting incremental records or delta records from the source systems?
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Questions Question: What are the various tools? - Name a few.
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Questions Question: What is latest version of Power Center / Power Mart?
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Questions Question: What is the difference between Power Center & Power Mart?
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Questions Question: What are the various transformation available?
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When there is any situation that u should attach a new patch to ur kernel , then download the patch and install it,to make changes to kernel , go to ok prompt and type boot -r, it will update or reconfigure the kernel
Honesty, helpful and reliable
procedure is a set of sql statement ,are combined to gether to perform a specific task or to solve a specifi problem.it does not return value.
leadership is power to influence a group so that the members willingly exert efforts as aspired by the leader.
I have the unique combination of technical skill and the ability to build strong customer relationship. I have the ability to stay focussed in stressfull situation. I would be great addition to your team.
first execute the bc search spec to fetch the data then executes the applet search spec if applet search spec is not match with bc it skips
TCP-Transmission Control Protocol. TCP is Reliable. TCP is Connection oriented. UDP-User Datagram Protoco UDP is Unreliable. UDP is Connectionless.
By default in structure all data member and member function are public,i,e if you not mentation any access specifier. But in case of class By default all data member and member function are private.
Structure is a user defined data type. By default all structure variables are public type and we cann't use access specifier in structure type variable, where as in class we can define objects(variables) under required access specifier type.
variable cost is the cost which is not fixed in nature

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