Cognos Data Warehouse Question:
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What is the difference b/w macros and prompt?

Answer:

Macro-A macro is a set of instructions that can run applications.Example : A macro can open your catalog,select a report(say for instance) convert that to another format and export it to any specified location,provided the code (Program)is such.Prompt-A prompt specifies the manner in which data in the reports are to be displayed.A Prompt can be defined at the catalog level either or during report generation.

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What is Cognos Powerhouse and what is it used for?Suppose you run a report with empty data, how will you inform the end user that it has no data while running the report in report studio? is it possible, if so how?