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General Datawarehousing Interview Questions and Answers

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General Datawarehousing Interview Questions & Answers


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Questions Question: What is real time data-warehousing?
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Questions Question: What is data mining?
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Questions Question: What is Normalization, First Normal Form, Second Normal Form , Third Normal Form?
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Questions Question: What is ODS?
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Questions Question: What type of Indexing mechanism do we need to use for a typical datawarehouse?
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Questions Question: Which columns go to the fact table and which columns go the dimension table?
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Questions Question: What is a level of Granularity of a fact table?
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Questions Question: What does level of Granularity of a fact table signify?
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Questions Question: How are the Dimension tables designed?
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Questions Question: What are slowly changing dimensions?
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Questions Question: What are non-additive facts?
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Questions Question: What are conformed dimensions?
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Questions Question: What is VLDB?
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Questions Question: What is SCD1 , SCD2 , SCD3?
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Questions Question: What are Semi-additive and factless facts and in which scenario will you use such kinds of fact tables?
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Questions Question: What are conformed dimensions?
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Questions Question: Differences between star and snowflake schemas?
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Questions Question: How do you load the time dimension?
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Questions Question: Why are OLTP database designs not generally a good idea for a Data Warehouse?
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Questions Question: Why should you put your data warehouse on a different system than your OLTP system?
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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.
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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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