Information Storage and Retrieval
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Sunday, November 1, 2015
Understanding recursion
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Recursion is the process of solving a problem, by reducing the problem to a smaller(or simpler) version of the same problem and keep it re...
Tuesday, August 19, 2014
Use of Staging Area in Datawarehouse
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Reasons for Staging data before its loaded into a datawarehouse: 1. 'Free' the source systems: Once the data has been brought to ...
Saturday, August 16, 2014
Fastest way to know if a number is power of 2
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Using Bitwise operators: Check num & (num-1) == 0. If true, the number is a power of 2 else its not.
Sunday, June 15, 2014
DataWarehousing Terms
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Dimensional Modeling: A way to design datawarehouse. It employs Ralph Kimball's bottom up approach to design data marts using conf...
Friday, February 7, 2014
What is Oracle Wallet
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There are often situations where we have to give database access credentials in a shell script. This can be a security issue as database c...
Saturday, January 25, 2014
Statistics: Random Notes
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Statistics: Statistics is the science of collecting,organizing, summarizing, analyzing and interpreting data. Quantitative variables...
Sunday, January 19, 2014
What is the difference between an Oracle User and an Oracle Schema?
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An Oracle schema is a collection of database objects like tables, functions, indexes etc A user "owns" a schema. When a user is ...
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